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 5910-00-064-2500
NSN 2925-00-693-1674
NSN 5910-00-128-0840
NSN 5835-01-330-8597
NSN 6135-01-411-3212
NSN 6320-01-141-3791
NSN 5950-00-623-8103
NSN 5925-00-986-7314
NSN 6150-01-115-7819
NSN 5998-01-311-2576
NSN 5975-01-265-3116
NSN 6135-01-278-9717