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 5905-01-205-2785
NSN 5910-01-432-2825
NSN 5915-01-129-8142
NSN 5975-01-456-8548
NSN 5996-00-162-2017
NSN 5930-01-037-7126
NSN 6135-01-260-7180
NSN 6145-01-242-4492
NSN 6685-01-514-7161
NSN 5950-00-364-0764
NSN 5910-01-222-1624
NSN 6240-00-204-9355