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 5975-01-355-8588
NSN 5996-01-338-0555
NSN 7035-00-797-2635
NSN 6610-01-361-5784
NSN 6685-00-339-2207
NSN 5960-01-025-2526
NSN 6150-00-148-3909
NSN 5905-01-403-2806
NSN 2925-00-246-3077
NSN 6135-01-343-1592
NSN 6145-00-470-8255
NSN 6150-00-372-5979