Abrasion O-Rings
Resistance, or abrasion, must be taken into consideration if you are designing o-rings for dynamic conditions. nok Oil seals professional design.The rubbing and scraping of the o-rings will cause abrasion particularly if the moving parts actually contact the o-rings. The choice of an elastomer is the major consideration in stopping abrasion. However, using a harder compound, up to 85 durometer, can also be effective. rubber seal.You may also need to consider providing adequate lubrication, using smooth metal finishes and eliminating contamination from all materials that cause abrasion.
In general, TFE, FEP, carboxilated nitrile and urethane have excellent resistance to abrasion; buna-n and Viton? have good resistance; and silicone has poor resistance.nok Oil seals professional design.
We often see a failure pattern from abrasion in dynamic o-rings which are involved in a rotary,valve seal, reciprocating or oscillating motion which is characterized by a flattened surface on one side of the cross section of the o-ring. nok Oil seals professional design.
Resistance, or abrasion, must be taken into consideration if you are designing o-rings for dynamic conditions. nok Oil seals professional design.The rubbing and scraping of the o-rings will cause abrasion particularly if the moving parts actually contact the o-rings. The choice of an elastomer is the major consideration in stopping abrasion. However, using a harder compound, up to 85 durometer, can also be effective. rubber seal.You may also need to consider providing adequate lubrication, using smooth metal finishes and eliminating contamination from all materials that cause abrasion.
In general, TFE, FEP, carboxilated nitrile and urethane have excellent resistance to abrasion; buna-n and Viton? have good resistance; and silicone has poor resistance.nok Oil seals professional design.
We often see a failure pattern from abrasion in dynamic o-rings which are involved in a rotary,valve seal, reciprocating or oscillating motion which is characterized by a flattened surface on one side of the cross section of the o-ring. nok Oil seals professional design.
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