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 6320-01-421-3777
NSN 7035-01-440-8877
NSN 5895-01-226-9308
NSN 5960-01-183-8213
NSN 6685-01-411-5969
NSN 6110-01-363-5126
NSN 2925-01-312-9502
NSN 5835-01-654-4570
NSN 6110-00-431-4388
NSN 6610-01-116-2527
NSN 2925-00-923-4397
NSN 5905-00-887-4105