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 6135-01-460-3243
NSN 6320-00-925-0558
NSN 5910-01-254-0589
NSN 5930-01-366-9849
NSN 5895-01-149-7267
NSN 6135-01-031-8078
NSN 5930-01-155-5402
NSN 5965-00-240-3819
NSN 5975-00-545-1599
NSN 4140-01-465-6476
NSN 5905-01-562-8385
NSN 2925-01-517-4037