KELONG Rubber O-Ring Seals
Material	Hardness(Shore A)	Temperature	Size
			Standard Size	Available
NBR(Buna,Nitrile) FKM(FPM) EPDM Silicone(VMQ) HNBR EFKM PU PTFE	60-90 70-90 60-90 10-70 60-90 70-90 90~95 60~70	55℃-110℃ -20℃-250℃ -45℃-150℃ 60℃-280℃ 48℃-180℃ -18℃-326℃ -40℃-90℃ -100℃-280℃	AS-568(USA) JIS-B2401(Japan) DIN-3771(Germany) BS-1516(UK) ISO3601(International) R(France)	ID≤2000mm CS≤40mm
Resistance	Color	Certificate	Application
Hydraulic Fluid Engine Oil Chemical Ozone Steam & Hot Water Low Temperature High Temperature	Black Brown Red Green White Blue Clear Customized	IS09001 IS014001 TS16949 RoHS REACH FDA SGS	Auto Industry Construction Machinery Machine Tool Equipment Food Health Water Treatment Chemical Processing Hydraulic Pneumatic Industrial Manufaturing

Rubber Material	NBR	CR	EPDM	ACM	VMQ	FVMQ	FKM
Tear Strength	〇	⊙-〇	⊙	△-⊙	△-⊙	△	⊙-〇
Abrasion Resistance	◎	◎	〇	⊙	△-⊙	△	〇
Compression Set	〇-◎	〇-◎	〇-◎	〇	⊙-◎	〇	〇-◎
Resilience 23℃	〇	〇-◎	〇	⊙	△-◎	⊙	◎
Fire resistance	△	〇-◎	△	△	⊙-◎	◎	◎
Weather resistance	△	◎	◎	◎	◎	◎	◎
Water Resistance	◎	〇	◎	△	〇- ◎	◎	◎
Steam Resistance	⊙-〇	⊙	〇-◎	×	⊙-〇	⊙-〇	〇
Ozone Resistance	△-⊙	◎	◎	◎	◎	◎	◎
Oxygen resistance	〇	◎	◎	〇	◎	◎	◎
Acid Resistance (Dilute)	〇	◎	◎	△-⊙	〇	◎	◎
Acid Resistance (Concentrate)	〇	◎	◎	△-⊙	⊙	〇	◎
Base Resistance (Dilute)	〇	◎	◎	△-⊙	◎	◎	◎
Base Resistance (Concentrate)	〇	◎	◎	△-⊙	◎	〇	×
Synthetic Lubricant	〇-◎	△	×	△	×	◎	◎
Low Polar Lubricant	◎	◎	×	◎	〇	◎	◎
High Polar Lubricant	◎	〇	×	◎	⊙	◎	◎
Animal and Vegetable oil	〇	〇	〇-◎	〇	◎	◎	◎
Gas impermeability	〇-◎	〇	⊙	〇	△	△	◎
Electricity resistance	△-⊙	◎	◎	⊙	〇- ◎	◎	〇
Metal Adhesion	〇-◎	〇-◎	⊙-〇	〇	〇	⊙	⊙
◎: Excellent 〇: Good ⊙: Fair △: Poor ×: Very Poor

FKM EPDM NBR O Rings Non Standard Custom Colored Silicone O Rings Seal

KELONG NBR O Rings