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 5905-01-056-3365
NSN 5985-00-237-7321
NSN 6150-01-254-2764
NSN 6135-01-286-9563
NSN 5925-01-540-3872
NSN 5930-00-100-7171
NSN 5915-00-021-3734
NSN 5996-01-652-5952
NSN 6685-01-533-1505
NSN 6620-01-531-3250
NSN 6685-01-153-1846
NSN 5905-01-647-5541