PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MS21103-28
MS21103-28 ✓ 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 CLAMP,LOOP is a the manufacturer industrial component. Key specifications include diameter: 0.204 INCHES NOMINAL IN, material: STEEL COMP 1017 BAND, overall_width: 0.500 INCHES NOMINAL IN, style_designator: SINGLE LOOP, tongue_hole_type: ROUND, UNTHREADED, surface_treatment: CADMIUM BAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-108-9814, 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
MS21103-28
NSN: 5340-00-108-9814
FSC: 5340
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
diameter0.204 INCHES NOMINAL IN
materialSTEEL COMP 1017 BAND
overall_width0.500 INCHES NOMINAL IN
style_designatorSINGLE LOOP
tongue_hole_typeROUND, UNTHREADED
surface_treatmentCADMIUM BAND
material_thickness0.0285 INCHES MINIMUM AND 0.0355 INCHES MAXIMUM IN
loop_inside_diameter1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 TYPE AND B CLASS
material_document_and_classificationQQ-S-636,COND 4 FED SPEC SINGLE MATERIAL RESPONSE BAND
distance_from_loop_center_to_tongue_end1.498 INCHES NOMINAL IN
center_to_center_distance_between_loop_and_mounting_hole1.280 INCHES NOMINAL IN
NSN5340-00-108-9814
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS21103-28 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BAND
•
LOOP INSIDE DIAMETER: 1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SINGLE LOOP
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6721 MIL SPEC ALL MATERIAL RESPONSES BAND
•
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 1.280 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 321 OR STEEL COMP 347 BAND
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BAND
LOOP INSIDE DIAMETER1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN
STYLE DESIGNATORSINGLE LOOP
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721 MIL SPEC ALL MATERIAL RESPONSES BAND
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE1.280 INCHES NOMINAL IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
MATERIALSTEEL COMP 321 OR STEEL COMP 347 BAND
SURFACE TREATMENTPASSIVATE BAND
DISTANCE FROM LOOP CENTER TO TONGUE END1.498 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
AN742-28Upgraded Successor
successor cross-reference
successor
MIL-DTL-8603Upgraded Successor
successor cross-reference
successor
MS21103-28Upgraded Successor
successor cross-reference
successor
MS21103Interchangeable
interchangeable cross-reference
interchangeable
MS21103-7Interchangeable
interchangeable cross-reference
interchangeable
MS21103-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MS21103-28?
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 MS21103-28?
MS21103-28 is a CLAMP,LOOP.
What parts can replace MS21103-28?
There are 16 known substitutes for MS21103-28: AN742-28, MIL-DTL-8603, MS21103-28 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21103-28?
MS21103-28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-108-9814. 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 — MS21103-28

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