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 5905-01-268-3877
NSN 6240-01-584-0045
NSN 5930-00-804-5666
NSN 5945-01-053-5624
NSN 6685-00-580-9733
NSN 6150-00-008-3736
NSN 6110-01-187-2530
NSN 5910-00-548-9888
NSN 6610-01-399-5222
NSN 6685-01-209-4683
NSN 5910-01-235-0329
NSN 6105-00-012-3063