PartsTable
Technical Data Sheet
PartsTable / COMPONENT / SM-B-187021
SM-B-187021 ✓ 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 BRACKET,ANGLE is a the manufacturer industrial component. Key specifications include first_leg_angle: 90.0 DEGREES NOMINAL, first_leg_style: SQUARE, first_leg_length: 0.687 INCHES NOMINAL IN, second_leg_width: 0.500 INCHES NOMINAL IN, special_features: 5 HOLES ON FIRST LEG,EACH 0.060 IN. DIA IN, style_designator: ANGLE.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-330-5701, 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
SM-B-187021
NSN: 5340-00-330-5701
FSC: 5340
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
first_leg_angle90.0 DEGREES NOMINAL
first_leg_styleSQUARE
first_leg_length0.687 INCHES NOMINAL IN
second_leg_width0.500 INCHES NOMINAL IN
special_features5 HOLES ON FIRST LEG,EACH 0.060 IN. DIA IN
style_designatorANGLE
second_leg_length1.000 INCHES NOMINAL IN
mounting_hole_typePLAIN
second_leg_hole_diameter0.188 INCHES NOMINAL IN
second_leg_hole_arrangement_styleONE HOLE
second_leg_relationship_to_first_legNOT IDENTICAL
NSN5340-00-330-5701
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SM-B-187021 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
•
FIRST LEG LENGTH: 0.687 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: PLAIN
•
STYLE DESIGNATOR: ANGLE
•
SECOND LEG HOLE ARRANGEMENT STYLE: ONE HOLE
•
SECOND LEG RELATIONSHIP TO FIRST LEG: NOT IDENTICAL
•
SECOND LEG HOLE DIAMETER: 0.188 INCHES NOMINAL IN
•
SECOND LEG WIDTH: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST LEG LENGTH0.687 INCHES NOMINAL IN
MOUNTING HOLE TYPEPLAIN
STYLE DESIGNATORANGLE
SPECIAL FEATURES5 HOLES ON FIRST LEG,EACH 0.060 IN. DIA IN
SECOND LEG HOLE ARRANGEMENT STYLEONE HOLE
SECOND LEG RELATIONSHIP TO FIRST LEGNOT IDENTICAL
SECOND LEG HOLE DIAMETER0.188 INCHES NOMINAL IN
SECOND LEG WIDTH0.500 INCHES NOMINAL IN
SECOND LEG LENGTH1.000 INCHES NOMINAL IN
FIRST LEG STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
10373Interchangeable
interchangeable cross-reference
interchangeable
2051D31G1Interchangeable
interchangeable cross-reference
interchangeable
2051K3G1Interchangeable
interchangeable cross-reference
interchangeable
55002Interchangeable
interchangeable cross-reference
interchangeable
3116PInterchangeable
interchangeable cross-reference
interchangeable
MDL1.6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy SM-B-187021?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is SM-B-187021?
SM-B-187021 is a BRACKET,ANGLE.
What parts can replace SM-B-187021?
There are 11 known substitutes for SM-B-187021: 10373, 2051D31G1, 2051K3G1 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-187021?
SM-B-187021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-330-5701. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — SM-B-187021

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026