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 5855-00-487-9691
NSN 5855-01-254-3110
NSN 6620-00-905-6590
NSN 6650-00-382-6080
NSN 6645-01-615-4448
NSN 6135-01-218-3660
NSN 5925-01-660-9629
NSN 6685-01-413-6487
NSN 6135-00-160-7708
NSN 6685-01-193-4125
NSN 6320-00-149-7570
NSN 5920-01-632-0657