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 5960-00-452-6043
NSN 4140-00-111-3247
NSN 6110-01-389-5905
NSN 5960-01-311-2170
NSN 2925-00-932-6262
NSN 6110-00-930-8191
NSN 6220-01-072-2582
NSN 5925-01-114-8254
NSN 7035-01-499-7401
NSN 5925-00-392-6164
NSN 6645-00-262-7448
NSN 5930-00-212-8866