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 5835-01-312-4446
NSN 6145-00-068-7795
NSN 5950-01-275-5545
NSN 6220-01-220-5260
NSN 6610-01-083-1446
NSN 6685-01-433-3461
NSN 6610-01-559-5073
NSN 5945-01-614-1163
NSN 5855-01-465-4083
NSN 5835-00-170-5238
NSN 6320-01-054-3046
NSN 5999-01-270-3489