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 5950-00-422-5452
NSN 6150-01-089-6764
NSN 6110-00-248-7475
NSN 7035-00-870-0290
NSN 6685-01-131-6497
NSN 5910-00-528-5133
NSN 5975-01-516-0633
NSN 7035-01-653-7254
NSN 6320-01-455-3394
NSN 5999-01-134-5407
NSN 5996-00-156-4445
NSN 5855-00-189-6066