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121B825H02 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

121B825H02: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.000 INCHES NOMINAL IN, length: 2.500 INCHES NOMINAL IN, material: RUBBER, hole_diameter: 0.190 INCHES NOMINAL IN, body_thickness: 0.032 INCHES NOMINAL IN, special_features: ITEM HAS 3.000 IN. L,1.500 IN.

W CUTOUT IN CENTER,0.500 IN. FROM OUTSIDE EDGE; ITEM CEMENTED TO 121B825H01 IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-171-2425, 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
121B825H02
NSN: 5340-01-171-2425
FSC: 5340 — Hardware, Commercial
CAGE: 48306 — NORTHROP GRUMMAN SUPPORT SERVICES CORP (USA)
SPECIFICATIONS
width4.000 INCHES NOMINAL IN
length2.500 INCHES NOMINAL IN
materialRUBBER
hole_diameter0.190 INCHES NOMINAL IN
body_thickness0.032 INCHES NOMINAL IN
special_featuresITEM HAS 3.000 IN. L,1.500 IN. W CUTOUT IN CENTER,0.500 IN. FROM OUTSIDE EDGE; ITEM CEMENTED TO 121B825H01 IN
surface_treatmentPAINT
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, MULTI HOLES
end_item_identificationAN/TPS-43E,RADAR SET
hole_quantity_along_width6
cross-sectional_shape_styleFLAT W/OPEN CENTER
NSN5340-01-171-2425
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 121B825H02 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
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH: 0.250 INCHES NOMINAL IN
•
LENGTH: 2.500 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 2.000 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 1.750 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-3065,GRADE SC515A1 MIL SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT W/OPEN CENTER
•
SECURING DEVICE TYPE: SPECIAL
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.250 INCHES NOMINAL IN
LENGTH2.500 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH2.000 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG WIDTH1.750 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-3065,GRADE SC515A1 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT W/OPEN CENTER
SECURING DEVICE TYPESPECIAL
HOLE QUANTITY ALONG WIDTH6
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH0.250 INCHES NOMINAL 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 1
121B825Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121B825H02?
121B825H02 is a COVER,ACCESS.
What parts can replace 121B825H02?
There is 1 known substitute for 121B825H02: 121B825. Substitute compatibility should be verified for your specific system.
What is the NSN for 121B825H02?
121B825H02 is cataloged in the U.S. Government catalog under NSN 5340-01-171-2425. This indicates validated use in U.S. government and defense supply chains.
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