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 5985-01-376-2106
NSN 6620-01-580-4327
NSN 6610-00-186-9180
NSN 2925-01-497-1364
NSN 6685-01-205-5292
NSN 6220-00-702-6358
NSN 6620-01-582-2046
NSN 5905-00-214-2927
NSN 5920-00-378-1395
NSN 5945-01-172-7573
NSN 5925-01-581-3723
NSN 6135-01-204-3882