Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of epdm rubber washer for weather-resistant water sealing in China. If you're going to buy epdm rubber washer for weather-resistant water sealing made in China, welcome to get more information from our factory. We also accept customized orders.
EPDM Rubber Washer for Weather-Resistant Water Sealing
Product Characteristics
|
Material |
EPDM |
| All-Weather Durability | Inherently resistant to ozone, UV radiation, and atmospheric aging - maintains elasticity and sealing force after years of outdoor exposure without cracking or hardening |
| Hot-Water & Steam Resistance | Withstands continuous contact with hot water and low-pressure steam up to 150°C, suitable for boilers, heat exchangers, and CIP cleaning cycles |
| Water & Polar Fluid Compatibility | Excellent stability against petroleum-based oils, hydraulic fluids, greases, gasoline, and diesel - maintains sealing force without swelling or hardening |
| Broad Thermal Flexibility | Remains flexible and resilient from −40°C cold-climate conditions up to +150°C continuous operating temperature |
| Uniform Washer Compression | Controlled thickness tolerance and parallel surfaces distribute bolt load evenly across the full sealing face, preventing leak paths in flange and bolted joints |
| Electrical Insulation | Low dielectric loss and high insulation resistance suit outdoor electrical enclosures, solar PV junction boxes, and HVAC control components |
| Customization Flexibility | Inner diameter, outer diameter, thickness (0.5–20 mm), and hardness (40–90 Shore A) tailored to specific flange, fitting, and equipment requirements |
| Lead Time | 1-3 weeks |
| Payment Term | L/C, T/T, WEST UNION, PAYPAL, ESCROW |
| Hardness | 20-90 Shore |
| Quality certification | RoHS, REACH, FDA (food-grade grades), etc. |
Product Introduction
Key Features
The EPDM Rubber Washer for Weather-Resistant Water Sealing is purpose-built for applications where moisture, outdoor exposure, and hot water would degrade ordinary elastomer gaskets:
- Year-Round Outdoor Reliability - The saturated polymer backbone shrugs off ozone and ultraviolet attack, so these washers keep sealing on exposed pipework, rooftop equipment, and exterior plumbing long after general-purpose rubbers have cracked and perished.
- Hot-Water System Integrity - EPDM retains its elasticity and sealing pressure in continuous contact with hot water and steam, making it the standard for boiler connections, heat-exchanger flanges, and clean-in-place process lines where temperatures spike during sanitization cycles.
- Drinking-Water Safe - Available in FDA-compliant and potable-water-grade formulations, these washers introduce no taste, odor, or leachable compounds into drinking-water distribution, filtration housings, and beverage processing equipment.
- Wide Thermal Operating Window - From sub-zero winter starts in unheated outdoor piping to sustained 150°C operation in heating systems, the material stays flexible and maintains consistent compression without turning brittle or soft.
- Even Compression, Zero Leaks - Precision cutting and thickness control ensure every point on the gasket face receives uniform bolt load, eliminating the localized over-compression and gap leaks that plague uneven or poorly cut flat gaskets.
- Dielectric Stability for Electrical Use - Good electrical insulation properties make these washers suitable for outdoor junction boxes, solar panel combiner boxes, and HVAC electrical housings where sealing and insulation are both required.
Common Applications
Water Treatment & Plumbing - Flange gaskets for water mains, check-valve seals, filter-housing washers, and potable-water distribution connections.
Outdoor & Exposed Infrastructure - Washers for rooftop HVAC units, exterior pipe flanges, solar mounting systems, and weather-exposed valve connections.
Steam & Hot-Water Systems - Boiler gaskets, heat-exchanger flange seals, radiator valve washers, and CIP circuit connections in food and beverage plants.
HVAC & Refrigeration - Duct flange gaskets, compressor housing seals, chilled-water line washers, and air-handling unit panel gaskets.
Food & Beverage Processing - Tri-clamp fitting gaskets, tank manway seals, filling-machine washers, and brewery/dairy process-line connections.
Electrical & Solar - Sealing washers for outdoor electrical enclosures, PV junction boxes, inverter housings, and weatherproof cable glands.
Quality Assurance
- Every lot undergoes thickness measurement, dimensional inspection, hardness testing, and compression-set verification before shipment.
- Full material traceability from raw compound to finished washer, with batch certificates available on request.
- FDA, potable-water, RoHS, and REACH compliance documentation supplied for relevant formulations.
- Statistical process control ensures consistent thickness and dimensional accuracy from prototype to volume production.
Company Information
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