compression rings

compression rings

The top rings used on reciprocating engines' pistons. They seal the cylinder, so that an upward-moving piston can compress the air into the cylinder. Compression rings also transfer heat from the piston to the cylinder wall.
References in periodicals archive ?
Tenders are invited for Compression Rings Set For Vehical Washer.
The unit also accepts most 1%-inch eyepieces seated in helical focusers, with non-marring brass compression rings in collet-style locking mechanisms.
After a new piston was fabricated and fit with new compression rings and connecting rod, the engine's slide valve was milled and its cylinder oiler reconditioned.
The wide, shallow pistons have two compression rings instead of the GP6's single ring, but are identical in every other respect.
A typical piston "ring pack" consists of two compression rings and an oil control ring.
This engine's connecting rods, wrist pins, compression rings and balance shafts were also used.
The ends of the structure are contained within compression rings.
The Perfect Circle Division worked in synchronized teams consisting of engineers from Dana and DaimlerChrysler in Brazil, Germany, and the United States to design a complete set of rings including the upper and intermediate compression rings, the oil ring expander, the side rail oil ring, and piston rings.
In 1985 we received patents on specially designed compression rings to hold blood in the penis," says Encore president Boyd Bennett.
In addition to the self-locking feature, these connectors also offer superior sealing protection through dual compression rings and dual o-rings.
Each version comes with both 2- and 1 1/2-inch eyepiece adapters that have non-marring compression rings.