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 6135-01-397-2170
NSN 2925-00-544-5159
NSN 6130-00-318-9246
NSN 5920-00-076-9889
NSN 6610-00-222-4108
NSN 5999-01-025-7468
NSN 6130-01-499-8679
NSN 5985-00-039-5527
NSN 6105-00-033-5425
NSN 4140-00-055-4373
NSN 6110-00-146-2114
NSN 5855-00-586-6255