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 6650-01-485-3444
NSN 6620-01-214-7520
NSN 5945-00-498-6802
NSN 2925-01-067-4446
NSN 6145-00-836-4872
NSN 5965-00-728-6658
NSN 5990-01-086-4825
NSN 5905-00-424-3099
NSN 6620-01-432-7032
NSN 7035-01-531-6554
NSN 5960-01-466-1500
NSN 6610-00-469-4596