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 5965-00-333-2592
NSN 5975-01-247-7734
NSN 5925-01-341-8166
NSN 6320-01-177-3192
NSN 5965-01-265-6814
NSN 5985-00-573-1402
NSN 5855-01-212-6612
NSN 6685-01-546-4851
NSN 6130-00-728-0705
NSN 5985-01-141-7059
NSN 6685-00-581-5656
NSN 4140-00-125-0837