O-Ring Materials - CR, NEOPRENE®

Chloroprene rubber is composed of emulsion polymerization of chloroprene or 2-chloroprene. CR is a multifunctional elastomer, and its overall physical properties are quite balanced.

Material properties:
● Excellent physical toughness and flame resistance.
● Resistant to sunlight, ozone and weathering.
● Excellent resistance to oil and many chemicals.

Applicable industries:
● Sealing strips, dust boots, shock-absorbing rubber, wires and cables, bushings, etc.

Best● Better○ Good△ BadX

Rubber type (ASTM Abbreviation )			Neoprene Rubber CR, NEOPRENE®
Chemical structure			Chloroprene
Main feature			Good elasticity and weather resistance, ozone, heat, medicine, grinding, atmospheric aging and animal and vegetable oils.
Pure rubber properties		proportion Muni viscosity ML1+ (100℃)	1.15 ∼ 1.25 45 ∼ 120
Physical properties of synthetic rubber		Possible JIS hardness range General temperature range(℃) Special temperature range(℃) Tensile strength (kg/cm2) Elongation (%) Anti-elastic Cracking Wear resistance Bending resistance	40 ∼ 80 -30 ∼ 90 -40 ∼ 100 50 ∼ 250 1000 ∼ 100 ● ○ ○ ~ ● ○
Various properties of synthetic rubber	lubricating oil	Engine oil Gear Oil Motor oil Shaft lubricant Refrigeration oil Butter Lithium oil Oyster sauce	△ △ △ X △ △ ● ○
	Working oil	Pot shaft oil Oil + Water emulsion system Water + Glycol Phosphate ester Si Brake Fluid Gear oil	△ ○ ○ X ○ △ X
	Fuel oil	Light oil、kerosene Heavy oil Gasoline	X X X
	Water	Water、Warm water Water vapor、Hot water Antifreeze water Water cutting oil	X ○ ○ ○
	Drug	Hydrochloric acid 20% Sulfuric acid 30% Nitric acid 10% Caustic soda 30% Benzene Trichloroethylene Alcohol Vinyl glycerol Liquid fat Alcohol Ether Ketone (MEK) Acetic acid、Ethyl ester	○ ○ X ○ X X ● ● X ● X ~ △ △ ~ ○ X
	Gas	LPG Urban gas Ozone Freon 12 Freon 22	X △ ● ● ●
	Other	Food Sanitation Law Vacuum、Atmosphere 10mm kg 10-4 ~ 10-9	X ●
The main purpose			Resistant to R12 coolant, household appliances, seals exposed to atmospheric sunlight and chemical corrosion.