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 5985-01-310-8473
NSN 4140-01-139-6192
NSN 6220-00-361-8338
NSN 6320-01-157-4400
NSN 6240-01-528-1585
NSN 5985-00-909-7195
NSN 5950-00-919-5354
NSN 5965-01-372-9653
NSN 5935-00-144-8017
NSN 7035-01-267-4836
NSN 5999-01-067-1725
NSN 5999-00-860-3408