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 6145-01-414-0271
NSN 6135-00-519-1325
NSN 5985-01-647-1583
NSN 5930-00-542-3901
NSN 5996-00-234-5778
NSN 6645-00-079-1430
NSN 6220-00-280-2880
NSN 6220-01-359-4857
NSN 5855-00-494-9581
NSN 6145-00-539-9799
NSN 2925-01-116-1683
NSN 4140-01-117-1225