
Popular Epdm High Temperature O Rings Outdoor For Automobile Cooling Systems
EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications
Trade Names:
ASTM D1418 Designation: EPDM
ASTM D2000/SAE J200 Type, Class: AA, BA, CA, DA
Apple Compound Designation: EP
Standard Color: Black
Description: A copolymer of ethylene and propylene (EPR), combined with a third comonomer adiene(EPDM), Ethylene Propylene has gained wide seal industry acceptance for its excellent ozone and chemical resistance characteristics.
Key Use(s): Outdoor weather resistant uses. Automotive brake systems. Automobile cooling systems. Water applications. Low torque drive belts.
Temperature Range
Standard Compound: -40° to +275°F
Special Compound: -67° to +302°F
Hardness (Shore A): 40 to 95
Features: When compounded using peroxide curing agents high temperature service can reach +350°F. Good resistance to acids and solvents (i.e. MEK and Acetone).
Limitations: Have no resistance to hydrocarbon fluids.
Press Cure | Post Cure | ||
Sheet : 5min 170℃ | Sheet : 1 hrs 125℃ | ||
Button : 10 min 170℃ | Button : 1 hrs 125℃ | ||
ORIGINAL PROPERTIES | SPECIFICATION | TEST RESULT | |
HARDNESS SHORE A | 70°±5 | 70 | |
TENSILE STRENGTH, MPA, MIN | 14 | 14.9 | |
ULTIMATE ELONGATION, %, MIN | 300 | 327 | |
SPECIFIC GRAVITY (g/cm3) | 1.15 | ||
HEAT RESISTANCE 70 H . AT 100℃ | |||
CHANGE IN HARDNESS, POINTS | 10 | 2 | |
CHANGE IN TENSILES STRENGTH,% | -25 | -4.1 | |
ULTIMATE ELONGATION,MAX % | -25 | -3.4 | |
COMPRESSION SET, MAX, 22H AT 70℃ | 25 | 8 | |
RESISTANCE TO OZONE | |||
EXPOSURE METHOD B | N0 CRACK | PASS | |
WATER RESISTANCE:100℃,70H (EA14) | |||
VOLUME CHAGE,% | ±5 | 3.7 | |
LOW-TEMPERATURE BRITTLENESS NONBRITTLE | |||
AFTER 3MIN AT -55°C (F19) | NONBRITTLE | PASS |
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Dongguan Ruichen Sealing Co., Ltd.
DONGGUAN RUICHEN SEALING CO., LTD
SHANGRAO RUICHEN SEALING CO.,LTD
Ruichen Sealing Co., Ltd was built in 2006, The company has two branches in Dongguan and Shangrao.They are Dongguan Ruichen Sealing Co., Ltd. and Shangrao Ruichen Sealing Co., Ltd.. We mainly produce rubber o rings , gaskets , ball , grommet and customized rubber part. Shangrao Ruichen as production base , covering a total area of 18,000 square meters, with total assets of 100 million yuan, more than 300 employees and 46 sets of plate vulcanizer machines.
Ruichen focus on research and production of rubber seals. At present, we have more than 10,000 sets of molds for O-ring and other seal rings. O-ring sizes include American standard (AS568), Japanese standard (JIS) and GB series. The material meets the requirements of various environmental regulations (ROHS2.0 REACH224 FDA, PAHS, WRC, WARS, VOC, UL), etc. Products are widely used in automotive parts, connectors, electronic products, pumps and valves, pneumatic, power tools, medical instruments and other fields.
Ruichen use ISO9001, IATF16949, ERP, HRP systems to establish and improve the quality management, process management, labor cost control. Ruichen adhering to the "love management, fuhui sustainable (carry forward good moral character, create good quality)" concept, aim to seal industry deep cultivation for a hundred years, to be O-RING KING!