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Technical Data Sheet
PartsTable / COMPONENT / 37-1059-2-2
37-1059-2-2 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, width: 0.285 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN, material: PLASTIC POLYCARBONATE, special_features: 0PPN6 IS AN AUTHORIZED DISTRIBUTOR FOR CAGE CODE 08179 (APPROVED SOURCE OF SUPPLY LISTED ON DRAWING), end_item_identification: B52H/ALALR20A, part_name_assigned_by_controlling_agency: GUARD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-668-2617, 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
37-1059-2-2
NSN: 5340-01-668-2617
FSC: 5340
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
shapeRECTANGULAR
width0.285 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
materialPLASTIC POLYCARBONATE
special_features0PPN6 IS AN AUTHORIZED DISTRIBUTOR FOR CAGE CODE 08179 (APPROVED SOURCE OF SUPPLY LISTED ON DRAWING)
special_test_featuresITEM IS PROTECTIVE COVER FOR FRONT OF SWITCH TO PREVENT INADVERTENT ACTUATION; LEGEND ON SWITCH: BNS /MAN, MAXIMUM WEIGHT: 25OZ OZ
end_item_identificationB52H/ALALR20A
part_name_assigned_by_controlling_agencyGUARD
NSN5340-01-668-2617
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 37-1059-2-2 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
•
USAGE DESIGN: THE -5 GUARD SHALL CONSIST OF A HINGED,TRANSPARENT COVER AND APPROPRIATE ATTACHING RING TO COVER THE LENS-LAMP HOUSING AND PREVENT INADVERTENT ACTUATION; IT SHALL BE SPRING LOADED TO STAY IN EITHER THE DOWN (SWITCH GUARDED) OR UP (OPEN) POSITION; THE GUARD SHALL BE SO DESIGNED AS TO BE OPERABLE WITH A GLOVED HAND; THE ATTACHING RING SHALL BE DESIGNED TO FIT BETWEEN THE PANEL SPACER AND THE SWITCH BEZEL AND SHALL BE HELD FIRMLY IN PLACE WHEN THE SWITCH IS MOUNTED TO A PANEL; THE TRANSPARENT COVER SHALL BE OF POLYCARBONATE, FLAME RESISTANT
•
WIDTH: 0.285 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
•
SPECIAL TEST FEATURES: ITEM IS PROTECTIVE COVER FOR FRONT OF SWITCH TO PREVENT INADVERTENT ACTUATION; LEGEND ON SWITCH: BNS /MAN, MAXIMUM WEIGHT: 25OZ OZ
•
MATERIAL: PLASTIC POLYCARBONATE
•
SHAPE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONB52H/ALALR20A
USAGE DESIGNTHE -5 GUARD SHALL CONSIST OF A HINGED,TRANSPARENT COVER AND APPROPRIATE ATTACHING RING TO COVER THE LENS-LAMP HOUSING AND PREVENT INADVERTENT ACTUATION; IT SHALL BE SPRING LOADED TO STAY IN EITHER THE DOWN (SWITCH GUARDED) OR UP (OPEN) POSITION; THE GUARD SHALL BE SO DESIGNED AS TO BE OPERABLE WITH A GLOVED HAND; THE ATTACHING RING SHALL BE DESIGNED TO FIT BETWEEN THE PANEL SPACER AND THE SWITCH BEZEL AND SHALL BE HELD FIRMLY IN PLACE WHEN THE SWITCH IS MOUNTED TO A PANEL; THE TRANSPARENT COVER SHALL BE OF POLYCARBONATE, FLAME RESISTANT
WIDTH0.285 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
SPECIAL TEST FEATURESITEM IS PROTECTIVE COVER FOR FRONT OF SWITCH TO PREVENT INADVERTENT ACTUATION; LEGEND ON SWITCH: BNS /MAN, MAXIMUM WEIGHT: 25OZ OZ
SPECIAL FEATURES0PPN6 IS AN AUTHORIZED DISTRIBUTOR FOR CAGE CODE 08179 (APPROVED SOURCE OF SUPPLY LISTED ON DRAWING)
PART NAME ASSIGNED BY CONTROLLING AGENCYGUARD
MATERIALPLASTIC POLYCARBONATE
SHAPERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
50543Interchangeable
interchangeable cross-reference
interchangeable
51056-0Interchangeable
interchangeable cross-reference
interchangeable
37-1059-5Interchangeable
interchangeable cross-reference
interchangeable
FS10102-1010Interchangeable
interchangeable cross-reference
interchangeable
DIEAND10133-1003Interchangeable
interchangeable cross-reference
interchangeable
QQA200-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 37-1059-2-2?
37-1059-2-2 is a COVER,ACCESS.
What parts can replace 37-1059-2-2?
There are 7 known substitutes for 37-1059-2-2: 50543, 51056-0, 37-1059-5 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 37-1059-2-2?
37-1059-2-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-668-2617. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026