The O-Ring, cataloged under National Stock Number 5331-00-087-6750, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is DC Fabricators Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-087-6750 |
| Primary Part Number | 19-660-377-00-037 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | DC Fabricators Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.267 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN |
| Center Hole Diameter | 46.875 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 19-660-377-00-037 | DC Fabricators Inc (USA) |
| Reference | Meaning |
|---|---|
| 19-660-377-00PC037 | 5/9 Secondary reference U.S. Government activity |
| MIL-G-21610 TYPE 1 | 4/1 Identification reference U.S. Government activity |
| 19-660-377PC37 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-00-087-6750 is a O-Ring, manufactured by DC Fabricators Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-087-6750 has 1 manufacturer part number on file: 19-660-377-00-037 (DC Fabricators Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5331-00-892-4137, 5331-00-995-4367. Verify interchangeability with system specifications before substitution.
Key specifications for 19-660-377-00-037: Cross-Sectional Height: 0.267 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN; Center Hole Diameter: 46.875 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.