Low / High Temp Resistant FKM O Rings Customized For Automobile Systems

FKM® or fluorocarbon elastomers were first introduced in the mid 1950's. Since then they have become of major importance in the seal industry. Due to its good chemical resistance, high temperature range and its low compression set, fluorocarbon rubber is the most significant single elastomer development in recent history. The working temperature range ifor FKM® is considered to be -15 to +400 degrees F (-29 to +204 degrees C), but it will take temperatures up to 600 degrees F (316 degrees C) for short periods of time. Du Pont's Kalrez® is normally recommended up to 500 degrees F (260 degrees C). On the low end, FKM® compounds have been known to seal at -65 degrees F (-54 degrees C) in some special static applications, however the normal low temperature limit is -15 degrees F (-26 degrees C). Fluorocarbon 0-rings should be considered for seal use in aircraft, automobile, scientific instruments and other mechanical devices requiring maximum resistance to elevated temperature and to many functional fluids. They are widely used in diffusion pumps on vacuum systems and on vacuum flanges on mass spectrometers and electron microscopes. FKM® is recommended for most applications and Kalrez® is only used where the additional temperature range can be justified by the increased cost.

ORIENTAL STAR TEST REPORT
V7501 COMPOUND
ASTM D2000 M2HK 710 A1-10 B37 B38 EO78 EF31 F13 Z=Hardness 75±5
Press Cure
Sheet : 5min 175℃
Button : 10 min 175℃
ORIGINAL PROPERTIES		SPECIFICATION	TEST RESULT
HARDNESS SHORE A		75°±5	73
TENSILE STRENGTH, MPA, MIN		10	10.9
ULTIMATE ELONGATION, ％, MIN		150	213
SPECIFIC GRAVITY (g/cm3)		1.85+/-0.08	1.87
HEAT RESISTANCE 70 H . AT 250℃(A1-10)
CHANGE IN HARDNESS, POINTS		+10	+5
CHANGE IN TENSILES STRENGTH, %		-25	+26
CHANGE IN ULTIMATE ELONGATION,MAX %		-25	-18
COMPRESSION SET, MAX, 22H AT 175℃ (B37 )		50	21.5
COMPRESSION SET, MAX, 22H AT 200℃ (B38 )		50	28.3
FLUID RESISTANCE FUEL.101. 70H AT 200℃ (EO78)
CHANGE IN HARDNESS, POINTS		-15~+5	-13
CHANGE IN TENSILES STRENGTH, MAX %		-40	-20.7
CHANGE IN ULTIMATE ELONGATION,MAX %		-20	-8.3
CHANGE IN VOLUME %		0~+15	+10.5
FLUID RESISTANCE FUEL C, 70H AT 23℃(EF31)
CHANGE IN HARDNESS, POINTS		±5	-4
CHANGE IN TENSILES STRENGTH, MAX %		-25	-20.2
CHANGE IN ULTIMATE ELONGATION,MAX %		-20	-18.6
CHANGE IN VOLUME %		0~+10	+5

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!