The Rubber Sheet,cellular, cataloged under National Stock Number 9320-00-641-7088, is classified within Federal Supply Class 9320 (Rubber Fabricated Materials) of the Nonmetallic Fabricated Materials group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9320-00-641-7088 |
| Primary Part Number | MMSD421GRADE42 |
| Item Name | Rubber Sheet,cellular |
| FSC / FSG | 9320 / 93 — Rubber Fabricated Materials |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Temp Rating | -31.0 CELSIUS DEGC |
| Length | 36.000 INCHES MINIMUM AND 36.750 INCHES MAXIMUM IN |
| Surface Condition | SMOOTH BOTH SIDES |
| Nondefinitive Spec/std Data | MEDIUM CONDITION AND B GRADE AND II TYPE |
| Environmental Protection | LOW TEMPERATURE |
| Width | 36.000 INCHES MINIMUM AND 36.750 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-STYRENE CLASS SBR |
| Fabrication Method | CELLULAR, UNEXPLODED |
| Thickness | 0.062 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MMSD421GRADE42 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| MMSC451GRADE42 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| Reference | Meaning |
|---|---|
| ASTM-D6578 | 3/1 Design control — primary reference U.S. Government activity |
| MIL-R-6130 | 4/1 Identification reference U.S. Government activity |
| ASTM-D6576 TY2, GR B, COND ME | 3/2 Design control — primary reference U.S. Government activity |
NSN 9320-00-641-7088 is a Rubber Sheet,cellular, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 9320, Rubber Fabricated Materials. Status: active.
NSN 9320-00-641-7088 has 2 manufacturer part numbers on file: MMSD421GRADE42 (Lockheed Martin Corporation Div Rotary and Mission Systems), MMSC451GRADE42 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for MMSD421GRADE42: Temp Rating: -31.0 CELSIUS DEGC; Length: 36.000 INCHES MINIMUM AND 36.750 INCHES MAXIMUM IN; Surface Condition: SMOOTH BOTH SIDES; Nondefinitive Spec/std Data: MEDIUM CONDITION AND B GRADE AND II TYPE. 9 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.