Nitrile
General-purpose body compound for hydraulic oils and water-based fluids.
T Seals
Moss Seal supplies T-seals as a direct upgrade where an O-ring will not survive the pressure, clearance, or dynamic duty of a gland. The T-shaped elastomer body is fitted with a pair of back-up rings that close the extrusion gap on both sides, giving a seal that resists spiral failure and rolling in reciprocating service while still installing into a standard groove. We match body compound and back-up material to your pressure, temperature, and fluid.
ENGINEERING
Cross-section design & operation
A T-section elastomer body sits between two back-up rings, so the sealing element is supported on both sides and cannot twist in the groove.
Assembly design
The elastomer carries the seal while the back-up rings take the extrusion load. The T-shaped profile locates positively in the groove and holds the back-ups in place, so the set stays square during stroke reversals.
How it works
System pressure loads the body against the sealing surface and the adjacent back-up ring. Because the geometry is symmetrical, the assembly seals equally well in either direction without reconfiguration.
Failure resistance
The squared section resists the rolling and spiral failure that affects O-rings in long-stroke reciprocating service, and the supported gap prevents nibbling at high pressure and wide clearances.
SELECTION
Materials & advantages
Performance advantages
Bi-directional sealing · Anti-spiral geometry · Resists extrusion · Fits standard grooves · Stable on stroke reversal · Handles wider clearances
