Parker recommends the use of a hard chrome plating on the bore for a reciprocating piston sealed with an O-ring. What are the qualities of hard chrome, besides hardness if any, that make it so suitable as a counter-wearing surface? Are newer coatings like TiN superior?
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations JStephen on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
O-ring for sealing reciprocating piston
- Thread starter 454Casull
- Start date
MikeHalloran
Mechanical
Also, just the right friction coefficient and a little microporosity to retain a tiny bit of oil and carry it under/through the seal line to lubricate the o-ring.
Mating surfaces that are too smooth will rub the o-ring to death very quickly.
Be aware that you also need some axial clearance in the gland in a reciprocating application, to allow the o-ring to roll a little bit, again to carry oil under/through the seal line.
Mike Halloran
Pembroke Pines, FL, USA
Mating surfaces that are too smooth will rub the o-ring to death very quickly.
Be aware that you also need some axial clearance in the gland in a reciprocating application, to allow the o-ring to roll a little bit, again to carry oil under/through the seal line.
Mike Halloran
Pembroke Pines, FL, USA
- Status
Similar threads
- Locked
- Question
- Locked
- Question