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2121757-1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2121757-1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 9.140 INCHES MINIMUM AND 9.180 INCHES MAXIMUM IN, length: 12.880 INCHES MINIMUM AND 12.900 INCHES MAXIMUM IN, special_features: HARDNESS CRITICAL ITEM, securing_device_type: SPECIAL, hole_quantity_along_width: 10, hole_quantity_along_length: 10. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-369-2331, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2121757-1
NSN: 5340-01-369-2331
FSC: 5340 — Hardware, Commercial
CAGE: 64547 — HONEYWELL INTERNATIONAL, INC DIV AEROSPACE-TUCSON (USA)
SPECIFICATIONS
width9.140 INCHES MINIMUM AND 9.180 INCHES MAXIMUM IN
length12.880 INCHES MINIMUM AND 12.900 INCHES MAXIMUM IN
special_featuresHARDNESS CRITICAL ITEM
securing_device_typeSPECIAL
hole_quantity_along_width10
hole_quantity_along_length10
cross-sectional_shape_styleFLAT
mounting_opening_shape_styleUNTHREADED HOLE
criticality_code_justificationFEAT
NSN5340-01-369-2331
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2121757-1 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 12.880 INCHES MINIMUM AND 12.900 INCHES MAXIMUM IN
•
HOLE QUANTITY ALONG LENGTH: 10
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
SECURING DEVICE TYPE: SPECIAL
•
HOLE QUANTITY ALONG WIDTH: 10
TECHNICAL CHARACTERISTICS
LENGTH12.880 INCHES MINIMUM AND 12.900 INCHES MAXIMUM IN
HOLE QUANTITY ALONG LENGTH10
CRITICALITY CODE JUSTIFICATIONFEAT
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLEFLAT
SECURING DEVICE TYPESPECIAL
HOLE QUANTITY ALONG WIDTH10
SPECIAL FEATURESHARDNESS CRITICAL ITEM
WIDTH9.140 INCHES MINIMUM AND 9.180 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 2121757-1?
2121757-1 is a COVER,ACCESS.
What is the NSN for 2121757-1?
2121757-1 is cataloged in the U.S. Government catalog under NSN 5340-01-369-2331. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.