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 6320-01-652-3806
NSN 6610-01-256-7938
NSN 2925-01-406-7154
NSN 6645-01-342-9415
NSN 6105-01-367-2269
NSN 6685-00-451-2672
NSN 7035-00-153-3826
NSN 5965-01-392-0049
NSN 5835-01-055-5418
NSN 5990-01-538-6115
NSN 5905-01-627-7176
NSN 5975-01-239-2623