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 6220-01-351-0183
NSN 7035-00-205-8739
NSN 6685-00-882-8127
NSN 2925-01-510-9378
NSN 6610-00-264-0961
NSN 6620-01-307-4037
NSN 6150-01-073-7525
NSN 6240-00-607-4303
NSN 5975-01-633-8182
NSN 6150-00-138-6026
NSN 6685-01-184-3985
NSN 6645-00-144-4868