Screw Valve Seals are core dynamic sealing components for positive displacement screw dispensing valves, precision metering screw valves and high-viscosity screw transfer valves. Designed for screw-stator meshing rotation, they prevent glue leakage along the screw shaft, isolate power and fluid chambers, stabilize metering accuracy and ensure consistent, repeatable precise dispensing under high pressure, high viscosity, filled particles and dynamic rotary friction conditions. Widely compatible with single/dual-component screw dispensing systems, they effectively solve shaft leakage, pressure instability, metering drift, particle wear and glue curing jamming, serving as critical consumables for high-viscosity and filled adhesive precision dispensing.

Screw valves deliver glue via precision screw rotation, operating under harsh conditions: 0–20MPa high pressure, continuous shear of high-viscosity fluid, hard particle scouring, low-to-medium speed rotary friction and media curing risk. This demands excellent wear resistance, particle resistance, creep resistance, swelling resistance, low friction and long service life from sealing materials. Manufactured from modified PTFE composite, high-elastic fluororubber, wear-resistant elastomer with stainless steel spring-energized structure, these seals undergo high-temperature molding, precision turning, wear strengthening, low-friction coating and anti-curing treatment. They deliver outstanding performance: wear & particle resistance, low friction, high-pressure self-energized sealing, medium swelling resistance, aging resistance and anti-jamming. With precise dimensions and high coaxiality, they adapt to screw dynamic rotation and stator static sealing, resisting wear, deformation and hardening during long-term operation while maintaining zero leakage and stable metering.

Featuring broad media compatibility, they suit high-viscosity epoxy resin, thermal grease, solder paste, AB glue, UV glue, structural adhesive, sealant and metal/ceramic-filled adhesives, eliminating particle embedding wear, cured glue adhesion and seal lip swelling failure. Covering most mainstream domestic and imported screw valve models and supporting non-standard customization, they meet 24/7 high-load mass production requirements, significantly improving dispensing yield and consistency while reducing glue waste, downtime and frequent replacement costs.

• Wear & Particle Resistance, Long Life: Modified PTFE with wear-resistant formulation withstands high filler/hard particle scouring; anti-wear and anti-creep, service life 2–3× longer than standard seals.
• High-Pressure Dynamic Sealing, Zero Leakage: Spring-energized + self-energized sealing structure adapts to pressure up to 20MPa; seal lip automatically compensates wear during screw rotation, higher pressure = tighter seal.
• Low Friction & Anti-Jamming, Stable Operation: Low-friction coating with high-elastic material ensures smooth rotation without stiction, eliminating stringing, tailing and overflow while guaranteeing metering accuracy.
• Medium & Swelling Resistance, Wide Compatibility: Resists epoxy, solder paste and solvent erosion; no swelling, hardening or residual glue adhesion after long-term soaking, compatible with all high-viscosity/filled adhesives.
• Anti-Curing & Anti-Glue Buildup, Easy Maintenance: Dense, smooth surface resists glue buildup and curing, reducing cleaning frequency and maintenance costs.
• Precision Fit, Quality & Cost Efficiency: Accurate dimensions and high coaxiality fit mainstream screw valves; improve dispensing yield and consistency while reducing scrap and downtime losses.

Screw Valve Seals focus on high-viscosity, high-filler, high-pressure and precision metering dispensing scenarios. They are widely used in high-end precision manufacturing industries including semiconductor packaging, 3C electronics, automotive electronics, new energy, precision manufacturing and medical devices, serving as core supporting components for automated high-viscosity adhesive dispensing production lines.

• Semiconductor Packaging: Chip underfill, solder paste dispensing, epoxy encapsulation, IC pin protection and high-viscosity insulating adhesive coating.
• 3C Electronics: PCB solder paste printing, component thermal grease filling, phone structural adhesive bonding and lens sealant dispensing.
• Automotive Electronics: Vehicle sensor potting, electronic control module sealing, wire harness terminal coating and EV battery structural adhesive dispensing.
• New Energy Industry: EV battery thermal grease filling, cell fixation adhesive coating, energy storage module sealing and PV module potting adhesive applications.
• Precision Manufacturing: Precision gearbox grease sealing, micro-motor potting, precision component structural bonding and micro high-pressure dispensing.
• Medical Devices: Medical catheter bonding, micro-component sealing, sterile potting adhesive applications and high-cleanliness high-viscosity fluid control.