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 6150-00-248-2580
NSN 5910-01-130-9042
NSN 6685-01-544-6067
NSN 5960-01-139-3136
NSN 6150-01-519-8060
NSN 2925-00-254-9776
NSN 5915-00-753-7433
NSN 5905-00-293-2861
NSN 5975-01-443-2398
NSN 6145-00-653-2448
NSN 5985-01-039-4250
NSN 6645-00-115-2424