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 6240-01-604-9172
NSN 5998-01-359-6291
NSN 6685-01-014-0712
NSN 5945-00-207-8861
NSN 6610-01-149-9749
NSN 2925-01-346-9522
NSN 5895-01-449-0912
NSN 6320-00-857-4073
NSN 6130-01-226-8887
NSN 5925-01-322-2046
NSN 2925-00-936-9344
NSN 5990-01-364-8405