{"id":1472,"date":"2026-05-11T15:04:10","date_gmt":"2026-05-11T07:04:10","guid":{"rendered":"http:\/\/8.211.42.149\/?post_type=myproducts&#038;p=1472"},"modified":"2026-07-02T10:09:53","modified_gmt":"2026-07-02T02:09:53","slug":"ppl","status":"publish","type":"products","link":"https:\/\/walleglobal.com\/de\/products\/ppl\/","title":{"rendered":"PPL"},"content":{"rendered":"\n<div id=\"wp-block-themeisle-blocks-advanced-columns-f077f37b\" class=\"wp-block-themeisle-blocks-advanced-columns alignfull has-1-columns has-desktop-equal-layout has-tablet-equal-layout has-mobile-equal-layout has-vertical-unset\"><div class=\"wp-block-themeisle-blocks-advanced-columns-overlay\"><\/div><div class=\"innerblocks-wrap\">\n<div id=\"wp-block-themeisle-blocks-advanced-column-db7d1098\" class=\"wp-block-themeisle-blocks-advanced-column\">\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<style>\n\n\n.final-slider-wrapper * {\n  margin: 0 !important;\n  padding: 0 !important;\n  box-sizing: border-box !important;\n  border: none !important;\n  background: transparent !important;\n}\n\n\n.final-slider-wrapper {\n  width: 100% !important;\n  max-width: 73% !important;\n  height: 200px !important;\n  position: relative !important;\n  margin: 0 auto !important;\n  perspective: 1800px !important;\n  overflow: visible !important;\n}\n\n\n.final-slider-track {\n  width: 100% !important;\n  height: 100% !important;\n  position: relative !important;\n  transform-style: preserve-3d !important;\n}\n\n\n.final-slide {\n  position: absolute !important;\n  width: 60% !important;\n  max-width: 300px !important;\n  height: 200px !important;\n  left: 50% !important;\n  top: 50% !important;\n  transform: translate(-50%, -50%);\n  border-radius: 8px !important;\n  overflow: hidden !important;\n  box-shadow: 0 10px 30px rgba(0,0,0,0.2) !important;\n  transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;\n  backface-visibility: hidden !important;\n  cursor: pointer;\n}\n\n\n.final-slide img {\n  width: 100% !important;\n  height: 100% !important;\n  object-fit: cover !important;\n  display: block !important;\n  pointer-events: none !important;\n}\n\n.slide-btn {\n  position: absolute;\n  top: 50%;\n  transform: translateY(-50%);\n  width: 44px;\n  height: 44px;\n  background: #777777 !important; \n  border-radius: 50%;\n  display: flex;\n  align-items: center;\n  justify-content: center;\n  color: #ffffff; \n  font-size: 30px;\n  font-weight: bold;\n  border: none;\n  z-index: 20;\n  cursor: pointer;\n  display: none; \n}\n\n#prevBtn::after {\n  content: \"\u2039\";\n}\n#nextBtn::after {\n  content: \"\u203a\";\n}\n#prevBtn { left: 10px; }\n#nextBtn { right: 10px; }\n\n\n.img-modal {\n  position: fixed !important;\n  top: 0 !important;\n  left: 0 !important;\n  width: 100% !important;\n  height: 100% !important;\n  background: rgba(0,0,0,0.85) !important;\n  display: none;\n  align-items: center;\n  justify-content: center;\n  z-index: 99999 !important;\n}\n.img-modal img {\n  max-width: 90%;\n  max-height: 90vh;\n  border-radius: 6px;\n}\n\n@media (max-width: 768px) {\n  .final-slider-wrapper {\n    max-width: 100% !important;\n    height: 300px !important;\n    padding: 0 10px !important;\n  }\n  .final-slide {\n    width: 80% !important;\n    height: 220px !important;\n  }\n\n  .slide-btn {\n    display: flex !important;\n  }\n}\n<\/style>\n\n\n<div class=\"final-slider-wrapper\">\n  <div class=\"final-slider-track\">\n    <div class=\"final-slide\"><img decoding=\"async\" src=\"https:\/\/walleglobal.com\/wp-content\/uploads\/2026\/05\/PPL-Seals3.jpg\"><\/div>\n    <div class=\"final-slide\"><img decoding=\"async\" src=\"https:\/\/walleglobal.com\/wp-content\/uploads\/2026\/05\/PPL-Seals2.jpg\"><\/div>\n    <div class=\"final-slide\"><img decoding=\"async\" src=\"https:\/\/walleglobal.com\/wp-content\/uploads\/2026\/05\/PPL-Seals1.jpg\"><\/div>\n\n  <\/div>\n\n\n  <div class=\"slide-btn\" id=\"prevBtn\"><\/div>\n  <div class=\"slide-btn\" id=\"nextBtn\"><\/div>\n<\/div>\n\n\n<div class=\"img-modal\" id=\"imgModal\">\n  <img decoding=\"async\" src=\"\" id=\"modalImg\">\n<\/div>\n\n\n<script>\n(function(){\n  const slides = document.querySelectorAll('.final-slide');\n  const imgModal = document.getElementById('imgModal');\n  const modalImg = document.getElementById('modalImg');\n  const prevBtn = document.getElementById('prevBtn');\n  const nextBtn = document.getElementById('nextBtn');\n\n  let current = 0;\n  const len = slides.length;\n\n  function render() {\n\n    if (len === 1) {\n      slides[0].style.transform = 'translate(-50%, -50%) scale(1)';\n      slides[0].style.opacity = '1';\n      slides[0].style.pointerEvents = 'auto';\n      return;\n    }\n\n \n    if (len === 2) {\n      slides.forEach((slide, idx) => {\n        if(idx === current){\n          slide.style.transform = 'translate(-50%, -50%) scale(1)';\n        }else{\n          slide.style.transform = 'translate(-50%, -50%) translateX(-100%) scale(0.7)';\n        }\n        slide.style.opacity = '1';\n        slide.style.pointerEvents = 'auto';\n      });\n      return;\n    }\n\n\n    slides.forEach((slide, idx) => {\n      let diff = idx - current;\n      if (diff > len\/2) diff -= len;\n      if (diff < -len\/2) diff += len;\n      const absDiff = Math.abs(diff);\n\n      if (absDiff > 1) {\n        slide.style.opacity = '0';\n        slide.style.pointerEvents = 'none';\n      } else {\n        slide.style.opacity = '1';\n        slide.style.pointerEvents = 'auto';\n      }\n\n      let transform = '';\n      if (diff === 0) {\n        transform = `translate(-50%, -50%) scale(1)`;\n      } else if (diff === 1) {\n        transform = `translate(-50%, -50%) translateX(100%) scale(0.7)`;\n      } else if (diff === -1) {\n        transform = `translate(-50%, -50%) translateX(-100%) scale(0.7)`;\n      }\n      slide.style.transform = transform;\n    });\n  }\n\n\n  slides.forEach((el, idx) => {\n    el.onclick = function(){\n\n      if(idx === current){\n        modalImg.src = el.querySelector('img').src;\n        imgModal.style.display = 'flex';\n        return;\n      }\n\n      if (idx === current - 1 || idx === current - 1 + len) {\n        current = (current - 1 + len) % len;\n        render();\n      } else if (idx === current + 1 || idx === current + 1 - len) {\n        current = (current + 1) % len;\n        render();\n      }\n    };\n  });\n\n\n  prevBtn.onclick = () => {\n    if(len <= 1) return;\n    current = (current - 1 + len) % len;\n    render();\n  };\n \n  nextBtn.onclick = () => {\n    if(len <= 1) return;\n    current = (current + 1) % len;\n    render();\n  };\n\n\n  imgModal.onclick = function(){\n    imgModal.style.display = 'none';\n  };\n\n  render();\n})();\n<\/script>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div id=\"wp-block-themeisle-blocks-advanced-columns-c12399e1\" class=\"wp-block-themeisle-blocks-advanced-columns alignwide has-1-columns has-desktop-equal-layout has-tablet-equal-layout has-mobile-equal-layout has-vertical-unset\"><div class=\"wp-block-themeisle-blocks-advanced-columns-overlay\"><\/div><div class=\"innerblocks-wrap\">\n<div id=\"wp-block-themeisle-blocks-advanced-column-04a4f088\" class=\"wp-block-themeisle-blocks-advanced-column\">\n<div id=\"wp-block-themeisle-blocks-tabs-c31bb210\" class=\"wp-block-themeisle-blocks-tabs is-style-border\"><div class=\"wp-block-themeisle-blocks-tabs__content\">\n<div data-title=\"&lt;strong&gt;&lt;strong&gt;&lt;strong&gt;Material Introduction&lt;\/strong&gt;&lt;\/strong&gt;&lt;\/strong&gt;\" class=\"wp-block-themeisle-blocks-tabs-item\"><div class=\"wp-block-themeisle-blocks-tabs-item__header\" tabindex=\"0\"><strong><strong><strong>Material Introduction<\/strong><\/strong><\/strong><\/div><div class=\"wp-block-themeisle-blocks-tabs-item__content\">\n<p class=\"wp-block-paragraph\">Para Polyphenylene (PPL) is a new type of polymer material. Since its first successful synthesis in the United States in 1963, it has quickly attracted widespread international attention and research. Countries including the United Kingdom, the Soviet Union, Japan, Poland, Canada, France, West Germany, and Israel have conducted research and formally applied it in industrial production. In China, the R&amp;D and production of para polyphenylene is undertaken by research institutes under the Ministry of Chemical Industry, and it has been widely used in various industries nationwide.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para polyphenylene is a polymer linked by benzene rings, with many excellent properties. It has outstanding high-temperature resistance, starting to decompose at 520\u00b0C to 530\u00b0C, with no melting point, and can be used long-term below 400\u00b0C. This material also has excellent thermal stability and can be used to manufacture high-temperature bearing materials. In addition, para polyphenylene exhibits excellent corrosion resistance, as strong acids, strong alkalis, and various organic solvents cannot dissolve or corrode it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In terms of electrical properties, the volume resistivity of para polyphenylene is as high as 10\u00b9\u2075 to 10\u00b9\u2077 \u03a9\u00b7cm, and under different polymerization conditions, it can become an organic semiconductor. Furthermore, para polyphenylene has good self-lubricating properties, significantly outperforming traditional materials such as molybdenum disulfide and graphite.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, the molecular chains of para polyphenylene have high rigidity and regularity, giving it non-melting and non-dissolving characteristics, making its own processing and forming difficult. Therefore, para polyphenylene is usually blended with other materials, such as filling into polytetrafluoroethylene (PTFE), to improve its processability and comprehensive performance.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div id=\"wp-block-themeisle-blocks-advanced-columns-b05bd3ef\" class=\"wp-block-themeisle-blocks-advanced-columns alignwide has-1-columns has-desktop-equal-layout has-tablet-equal-layout has-mobile-equal-layout has-vertical-unset\"><div class=\"wp-block-themeisle-blocks-advanced-columns-overlay\"><\/div><div class=\"innerblocks-wrap\">\n<div id=\"wp-block-themeisle-blocks-advanced-column-aad48113\" class=\"wp-block-themeisle-blocks-advanced-column\">\n<div id=\"wp-block-themeisle-blocks-tabs-df28e45a\" class=\"wp-block-themeisle-blocks-tabs is-style-border\"><div class=\"wp-block-themeisle-blocks-tabs__content\">\n<div data-title=\"&lt;strong&gt;&lt;strong&gt;&lt;strong&gt;Application Industry&lt;\/strong&gt;&lt;\/strong&gt;&lt;\/strong&gt;\" class=\"wp-block-themeisle-blocks-tabs-item\"><div class=\"wp-block-themeisle-blocks-tabs-item__header\" tabindex=\"0\"><strong><strong><strong>Application Industry<\/strong><\/strong><\/strong><\/div><div class=\"wp-block-themeisle-blocks-tabs-item__content\">\n<p class=\"wp-block-paragraph\">PPL sealing rings are manufactured by using polytetrafluoroethylene (PTFE) as the matrix, filling with polyphenylene powder and other raw materials for compression molding, followed by high-temperature sintering and cooling. The comprehensive performance of these sealing rings is far superior to that of pure PTFE products or sealing parts made from PTFE filled with other materials.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thanks to their excellent high-temperature resistance, corrosion resistance, and self-lubricating properties, PPL sealing rings are widely used in multiple industries:<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\">Chemical Industry<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In chemical equipment, PPL sealing rings can be used to seal various corrosive media, such as strong acids and alkalis. Their outstanding corrosion resistance ensures the long-term stable operation of the equipment.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\">Printing and Dyeing Industry<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In printing and dyeing equipment, PPL sealing rings are used to seal high-temperature, high-pressure steam pipelines, ensuring the normal operation of equipment and product quality.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\">Compressor Industry<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In compressors, PPL sealing rings are used to prevent gas or liquid leakage, improving equipment efficiency and safety.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\">Valve Industry<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In valves, PPL sealing rings are used to seal the gap between the valve seat and the valve stem, preventing medium leakage and ensuring the normal operation of the valve.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition, PPL sealing rings are also widely used in light industry, textile, machinery, and other industries. Their excellent comprehensive performance makes them an ideal sealing material for these sectors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In conclusion, para polyphenylene, as a new type of polymer material, has many excellent properties and is widely used in various industries. As an important application of para polyphenylene, PPL sealing rings also perform exceptionally well in the sealing field, providing strong support for the stable operation of equipment in all industries.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator alignwide has-alpha-channel-opacity\"\/>\n\n\n\n<div id=\"wp-block-themeisle-blocks-advanced-columns-9a0e83fe\" class=\"wp-block-themeisle-blocks-advanced-columns alignwide has-1-columns has-desktop-equal-layout has-tablet-equal-layout has-mobile-equal-layout has-vertical-unset\"><div class=\"wp-block-themeisle-blocks-advanced-columns-overlay\"><\/div><div class=\"innerblocks-wrap\">\n<div id=\"wp-block-themeisle-blocks-advanced-column-5daca14f\" class=\"wp-block-themeisle-blocks-advanced-column\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f1426-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"1426\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/de\/wp-json\/wp\/v2\/products\/1472#wpcf7-f1426-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" enctype=\"multipart\/form-data\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"1426\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.7\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f1426-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"uacf7-form-wrapper-container uacf7-form-1426  \"><div class=\"cf7-original-style\">\n\n  <div class=\"cf7-row\">\n    <div class=\"cf7-col-half\">\n      <label>Name <span class=\"required\">*<\/span><\/label>\n      <span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required cf7-input\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n    <\/div>\n\n    <div class=\"cf7-col-half\">\n      <label>Email <span class=\"required\">*<\/span><\/label>\n      <span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email cf7-input\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n    <\/div>\n  <\/div>\n\n  <div class=\"cf7-row\">\n    <div class=\"cf7-col-half\">\n      <label>Country<\/label>\n      <span class=\"wpcf7-form-control-wrap\" data-name=\"your-country\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text cf7-input\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"your-country\" \/><\/span>\n    <\/div>\n\n    <div class=\"cf7-col-half\">\n      <label>Industry<\/label>\n      <span class=\"wpcf7-form-control-wrap\" data-name=\"your-industry\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text cf7-input\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"your-industry\" \/><\/span>\n    <\/div>\n  <\/div>\n\n  <div class=\"cf7-row\">\n    <div class=\"cf7-col-full\">\n      <label>Message <span class=\"required\">*<\/span><\/label>\n      <span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"7\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required cf7-textarea\" aria-required=\"true\" aria-invalid=\"false\" name=\"your-message\"><\/textarea><\/span>\n    <\/div>\n  <\/div>\n\n  <div class=\"cf7-row\">\n    <div class=\"cf7-col-full\">\n      <label>Upload Drawing<\/label>\n      <span class=\"wpcf7-form-control-wrap\" data-name=\"your-drawing\"><input size=\"40\" class=\"wpcf7-form-control wpcf7-file cf7-input\" accept=\".pdf,.dwg,.dxf,.zip,.jpg,.jpeg,.png\" aria-invalid=\"false\" type=\"file\" name=\"your-drawing\" \/><\/span>\n      <small class=\"cf7-file-note\">\n        Accepted formats: PDF, DWG, DXF, ZIP, JPG and PNG. Maximum file size: 10MB.\n      <\/small>\n    <\/div>\n  <\/div>\n\n  <div class=\"cf7-row\">\n    <div class=\"cf7-col-full\">\n      <p class=\"cf7-disclaimer\">\n        You agree to receive email communication from us by submitting this form and understand that your contact information will be stored with us.\n      <\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"cf7-row\">\n    <div class=\"cf7-col-full\">\n      <input class=\"wpcf7-form-control wpcf7-submit has-spinner cf7-submit\" type=\"submit\" value=\"Submit\" \/>\n    <\/div>\n  <\/div>\n\n<\/div><\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":1039,"template":"","meta":{"_themeisle_gutenberg_block_has_review":false},"class_list":["post-1472","products","type-products","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/walleglobal.com\/de\/wp-json\/wp\/v2\/products\/1472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/walleglobal.com\/de\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/walleglobal.com\/de\/wp-json\/wp\/v2\/types\/products"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/walleglobal.com\/de\/wp-json\/wp\/v2\/media\/1039"}],"wp:attachment":[{"href":"https:\/\/walleglobal.com\/de\/wp-json\/wp\/v2\/media?parent=1472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}