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 5905-01-227-0946
NSN 5935-01-365-3401
NSN 4140-01-220-9171
NSN 4140-01-396-2142
NSN 5996-01-398-0037
NSN 2925-00-623-3103
NSN 5935-00-691-2549
NSN 5925-01-249-4753
NSN 6645-01-609-7365
NSN 6645-01-108-7904
NSN 6220-01-407-1124
NSN 5935-01-106-4607