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 5996-00-927-2242
NSN 6220-00-287-9939
NSN 6610-01-472-2757
NSN 6110-01-463-9260
NSN 4140-01-141-6526
NSN 6240-01-371-3020
NSN 5975-00-170-3623
NSN 5930-00-579-9470
NSN 6685-01-305-8362
NSN 6240-00-168-1474
NSN 2925-01-533-7904
NSN 4140-01-103-7089