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 5935-01-554-4951
NSN 6645-01-475-8283
NSN 6110-00-412-8198
NSN 5996-01-539-1351
NSN 5975-00-432-5526
NSN 6110-01-389-3191
NSN 5905-01-298-1169
NSN 6645-01-200-5289
NSN 4140-01-376-3104
NSN 4140-01-170-1075
NSN 5999-01-106-4126
NSN 5935-01-423-4221