{"id":561,"date":"2026-04-29T14:04:09","date_gmt":"2026-04-29T06:04:09","guid":{"rendered":"http:\/\/8.211.42.149\/?page_id=561"},"modified":"2026-07-20T10:23:08","modified_gmt":"2026-07-20T02:23:08","slug":"about-us","status":"publish","type":"page","link":"https:\/\/walleglobal.com\/de\/about-us\/","title":{"rendered":"\u00dcber uns"},"content":{"rendered":"
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High-Performance Sealing Solutions Manufacturer<\/h1>\n <\/div>\n <\/div>\n
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WALLE is an ISO 9001-certified sealing solutions manufacturer with 20+ years of experience in PTFE, FFKM, spring-energized seals, hydraulic and custom rubber seals for demanding industrial applications.<\/p>\n <\/div>\n <\/div>\n

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View Product Catalog<\/span><\/a>\n <\/span> Contact Our Engineering Team<\/span><\/a>\n <\/span>\n <\/div>\n <\/div>\n
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About Us<\/h2>\n <\/div>\n <\/div>\n
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Dongguan Walle Sealing Technology Development Co., Ltd. is an ISO 9001-certified manufacturer with over 20 years of experience in high-performance sealing solutions, specializing in PTFE, spring-energized, hydraulic, and pneumatic\n seals. Utilizing in-house production and specialized engineering, the company provides customized rubber components\u2014including FFKM and Viton\u2014designed for extreme environments in sectors such as oil and gas, chemical processing, and\n medical machinery. We offer comprehensive OEM and ODM services, ensuring reliable, high-quality solutions for global industrial applications.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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Our Factory<\/h2>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n
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FAQs<\/h2>\n <\/div>\n <\/div>\n
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Product Selection & Application<\/h3>\r\n\r\n
Q1: What types of sealing products do you supply?<\/summary>

A: We specialize in perfluoroelastomer (FFKM) seals, spring energized seals (GreatSeal\u00ae), O-rings, high-speed rotary seals, food & pharmaceutical grade seals, oil & gas industry seals, as well as custom seals for compressors, hydraulic equipment and industrial machinery. We provide high-performance alternatives to imported sealing products.<\/p><\/details>\r\n

Q2: How do I choose the right seal for my equipment?<\/summary>

A: Please provide the following operating conditions: medium type, operating temperature, static\/dynamic pressure, motion type (reciprocating, rotary or static) and running speed. Our technical team will recommend the most suitable material and seal model for you.<\/p><\/details>\r\n

Q3: Where are spring-energized seals used?<\/summary>

A: Spring energized seals perform excellently under extreme working conditions such as high temperature, high pressure, strong chemical corrosion, vacuum and ultra-low temperature. They are widely used in chemical, semiconductor, pharmaceutical, food processing, valve and hydraulic systems.<\/p><\/details>\r\n

Q4: What are the advantages of FFKM (Perfluoroelastomer) seals?<\/summary>

A: FFKM seals feature universal chemical resistance, wide temperature range and long service life. They can withstand temperatures up to 260\u00b0C, and are ideal for strict hygiene and highly corrosive environments in pharmaceutical, semiconductor and fine chemical industries.<\/p><\/details>\r\n

Q5: Do you provide FDA compliant seals?<\/summary>

A: Yes. Our FDA-grade silicone and elastomer seals prevent dirt accumulation, suitable for food processing and CIP (Clean-in-Place) systems. All products comply with food and pharmaceutical industry hygiene standards.<\/p><\/details>\r\n\r\n

Material & Performance<\/h3>\r\n\r\n
Q6: What is the difference between common sealing materials (NBR, HNBR, FKM, FFKM)?<\/summary>

A:\r\n
NBR: Cost-effective, good oil resistance for general applications.\r\n
HNBR: Better heat resistance and anti-aging performance than NBR, suitable for high-temperature oil media.\r\n
FKM: Outstanding heat and chemical resistance for harsh corrosive conditions.\r\n
FFKM: Top-level universal chemical resistance for the most extreme working environments.\r\n
Silicone: Excellent for food, medical and clean applications with wide temperature adaptability.<\/p><\/details>\r\n

Q7: What are the standard temperature, pressure and speed ranges of your seals?<\/summary>

A:\r\n
Temperature: -70\u00b0C ~ +260\u00b0C; Special models support -120\u00b0C ~ +260\u00b0C.\r\n
Pressure: Max 45 MPa for dynamic working, max 80MPa for static working.\r\n
Speed: Up to 15 m\/s for reciprocating motion, up to 1m\/s for rotary motion.\r\n
Please refer to the individual product datasheets for specific parameters.<\/p><\/details>\r\n

Q8: Can your seals work with my special fluids or chemicals?<\/summary>

A: Our products are compatible with nearly all fluids, chemicals and gases. Feel free to send us the details of your working medium, and we will confirm the material compatibility for free.<\/p><\/details>\r\n\r\n

Installation & Troubleshooting<\/h3>\r\n\r\n
Q9: What should I consider during seal installation?<\/summary>

A:\r\n
Keep seal grooves clean without burrs or impurities.\r\n
Lubricate properly and avoid twisting or scratching the seal.\r\n
Maintain reasonable compression rate (15% \u2013 30%).\r\n
Install back-up rings under high pressure to prevent extrusion damage.\r\n
Use professional tools to avoid eccentric loading.<\/p><\/details>\r\n

Q10: What causes seal leakage?<\/summary>

A: Common reasons include improper model\/material selection, installation damage, excessive clearance or misalignment, medium corrosion, high temperature aging, and fatigue of the energizing spring.<\/p><\/details>\r\n

Q11: What should I do if a seal is worn, noisy, or hardened?<\/summary>

A:\r\n
Wear: Improve lubrication, filter particle contaminants or select wear-resistant materials.\r\n
Abnormal noise: Check shaft concentricity and add lubricant.\r\n
Hardening & cracking: The seal exceeds the rated temperature or medium range, please replace with matched materials.<\/p><\/details>\r\n\r\n

Customization & Delivery<\/h3>\r\n\r\n
Q12: Do you accept custom seals?<\/summary>

A: Yes. We can customize non-standard sizes, special materials, colors and structures according to your drawings or samples. Custom sealing solutions are available for special equipment.<\/p><\/details>\r\n

Q13: Can your products replace imported brand seals?<\/summary>

A: Absolutely. Our seals match the performance of well-known international brands, with shorter lead times and competitive pricing.<\/p><\/details>\r\n

Q14: What is your MOQ and delivery time?<\/summary>

A: Standard products are in stock for fast delivery. For customized orders, lead time depends on specifications and production processes. We support small trial orders and bulk orders.<\/p><\/details>\r\n\r\n

Technical Support & After-sales<\/h3>\r\n\r\n
Q15: What technical support can you provide?<\/summary>

A: We offer free services including model selection, groove design, material compatibility test, seal failure analysis and on-site installation guidance.<\/p><\/details>\r\n

Q16: How do you guarantee product quality?<\/summary>

A: Strict quality control is implemented throughout production. We can provide material certificates, performance test reports and relevant industry certifications.<\/p><\/details>\r\n

Q17: What is your after-sales policy?<\/summary>

A: For quality-related issues after delivery, please contact us with photos or videos, and we will handle it promptly. We maintain long-term cooperation and communication with all customers.<\/p><\/details>\r\n\r\n<\/section>\r\n\r\n