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 5835-01-366-5907
NSN 5950-01-169-9867
NSN 6135-01-010-0891
NSN 5950-00-479-7625
NSN 5905-01-510-9153
NSN 6110-01-158-0295
NSN 2925-01-219-6782
NSN 5905-01-252-9097
NSN 5935-00-194-1722
NSN 5925-01-476-8727
NSN 5855-00-337-3679
NSN 5910-01-416-7721