A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6135-00-243-8330
NSN 6105-00-306-0893
NSN 6220-00-320-7408
NSN 5925-00-780-8620
NSN 5945-01-512-9376
NSN 5999-01-367-9306
NSN 5996-00-967-2406
NSN 5835-01-502-9228
NSN 6320-01-246-4390
NSN 6220-01-418-5085
NSN 6150-00-293-5293
NSN 6135-01-506-4791