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 5935-01-221-2475
NSN 6610-01-371-5039
NSN 5910-01-273-9787
NSN 5960-01-167-8796
NSN 6145-01-130-1252
NSN 6240-01-442-3501
NSN 6685-01-472-2290
NSN 6645-00-183-8812
NSN 5920-01-040-3383
NSN 6110-01-243-1287
NSN 5960-01-132-9598
NSN 5930-01-339-3091