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 6650-00-828-6553
NSN 6320-00-343-1798
NSN 5905-01-322-5961
NSN 6135-01-026-9960
NSN 6220-01-398-8937
NSN 6320-01-318-4935
NSN 6220-01-056-6507
NSN 6150-01-020-8424
NSN 6685-01-071-4941
NSN 5985-01-101-8659
NSN 6220-00-456-2911
NSN 5985-01-650-5951