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 6135-01-386-5709
NSN 5855-00-188-6747
NSN 7035-01-438-2108
NSN 6685-00-186-9190
NSN 5985-01-415-5701
NSN 5950-01-541-5599
NSN 5990-01-198-0115
NSN 5910-01-455-4224
NSN 6110-01-377-6557
NSN 5950-01-326-4728
NSN 5910-00-070-6237
NSN 5996-01-240-0091