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 5895-01-396-8707
NSN 5975-01-246-7137
NSN 5960-01-421-0887
NSN 5905-01-451-3003
NSN 6645-01-084-9074
NSN 5950-01-224-8124
NSN 6110-01-073-6117
NSN 6685-00-318-7766
NSN 5975-01-268-1945
NSN 5965-00-458-7321
NSN 5960-00-907-4194
NSN 2925-01-633-4048