Rubber Materials: Metal-Cased Oil Seals, O-Rings & Seals — Material Properties & Performance

We manufacture rubber sealing rings for bearings with outer diameters (OD) from 4 mm to 450 mm, as well as metal-cased oil seals and O-rings in all specifications. Materials include oil-resistant nitrile rubber (NBR), high-temperature-resistant fluororubber (FKM), polyacrylate rubber (ACM), silicone rubber (VMQ), and other elastomers.

Material

Code

Operating Temperature Range

Properties & Applications

Nitrile Rubber (NBR)

NBR

-40℃~120°C

Excellent wear resistance, heat resistance, and oil resistance. Physical and mechanical properties comply with JB/T6639-93.3.1. Suitable for skeleton oil seals, mechanical oil seals, and oil-resistant rubber products for bearings of all specifications.

Polyacrylate Rubber (ACM)

ACM

-30℃~180°C

Oil resistance, high-temperature resistance, weather resistance, and UV resistance fall between NBR and FKM. Suitable for various seals, oil seals, and specialty rubber hoses in the automotive and mechanical industries.

Fluororubber (FKM)

FKM

-30°C~250°C

High-temperature resistance, oil resistance, chemical resistance, and solvent resistance. Skeleton oil seals suitable for demanding applications including aerospace, automotive, and defense. Awarded the "Certificate of Acceptance for Adopting International Standards" in 1994 and the 3rd China Science and Technology New Product Gold Award.

Silicone Rubber (VMQ)

VMQ

-70°C~300°C

Excellent high- and low-temperature resistance, ozone resistance, UV resistance, and weathering resistance, with outstanding breathability. Used in automotive, electronics & electrical, construction, aerospace, and medical industries.

Hydrogenated Nitrile Rubber (HNBR)

HNBR

-50°C~160°C

Good heat resistance, ozone resistance, weathering resistance, and chemical resistance to acids and alkalis. Primarily used in oil & gas well components, automotive fuel and lubricating oil system components, and nuclear power plant components.

EPDM Rubber (EPDM)

EPDM

-57°C~150°C

Outstanding ozone resistance, weathering resistance, heat resistance, chemical resistance, and excellent electrical insulation. Elasticity second only to natural rubber and butadiene rubber. Not resistant to fatty and aromatic solvents. Widely used in automotive parts, electrical products, O-ring seals, rubber hoses, gaskets, and window sealing strips.

Fluorosilicone Rubber (FVMQ)FVMQ-60°C~230°CIt has excellent high and low temperature resistance, can maintain good elasticity and sealing reliability under low temperature conditions, and has small compression permanent deformation. It is widely used in aerospace, automotive, petrochemical and industrial equipment fields. Widely used in aerospace, automotive, petrochemical, and industrial equipment applications.
Neoprene / Chloroprene Rubber (CR)

CR-40°C~100°CIt has good weather resistance, ozone resistance, and aging resistance, stable long-term performance in outdoor environments, balanced comprehensive performance, and is suitable for various industrial conditions.



Rubber Material Performance Comparison


Property

NBRACMFKMVMQHNBREPDMFVMQCR
Tensile StrengthGoodGoodGoodPoorOutstandingFairGoodGood
ElongationGoodGoodPoorOutstandingGoodGoodGoodGood
ElasticityGoodGoodFairGoodGoodGoodGoodGood
Tear StrengthGoodGoodFairPoorOutstandingFairGoodGood
Abrasion ResistanceOutstandingGoodFairPoorOutstandingGoodGoodGood
Impact ResistanceGoodGoodFairPoorOutstandingGoodGoodGood
Air TightnessGoodGoodGoodPoorGoodFairGoodGood
Oxidation ResistanceFairGoodOutstandingOutstandingOutstandingOutstandingOutstandingGood
Ozone ResistanceFairGoodOutstandingOutstandingOutstandingOutstandingOutstandingGood
Weathering ResistanceFairGoodOutstandingOutstandingOutstandingOutstandingOutstandingGood
UV ResistanceFairGoodOutstandingOutstandingOutstandingOutstandingOutstandingGood
Heat ResistanceFairOutstandingOutstandingOutstandingOutstandingOutstandingOutstandingGood
Low-Temperature FlexibilityFairGoodGoodOutstandingGoodGoodOutstandingGood
Oil & Fuel ResistanceOutstandingGoodOutstandingFairOutstandingFairOutstandingGood
Animal & Vegetable Oil ResistanceOutstandingGoodOutstandingGoodOutstandingGoodOutstandingGood
Alcohol ResistanceGoodGoodGoodGoodGoodGoodGoodGood
Alkali ResistanceGoodGoodGoodPoorGoodGoodGoodGood
Acid ResistanceGoodGoodGoodFairGoodGoodGoodGood
Fatty Oil ResistanceOutstandingGoodOutstandingFairOutstandingGoodOutstandingGood
Aromatic Oil ResistanceGoodFairOutstandingFairGoodFairOutstandingGood
Oxidizing SolventsFairGoodGoodFairGoodOutstandingGoodGood
Water ResistanceGoodGoodGoodOutstandingGoodOutstandingGoodGood


Performance Rating ScaleOutstanding
Good
Fair
Poor