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RTC2146A20 — PACKING WITH RETAINER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

RTC2146A20: PACKING WITH RETAINER.

The PACKING WITH RETAINER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY RETAINER, construction: TWO-PIECE, outside_diameter: 1.750 INCHES NOMINAL IN, surface_treatment: ANODIZE RETAINER, retainer_thickness: 0.040 INCHES NOMINAL IN, packing_inside_diameter: 1.520 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-202-3816, 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
RTC2146A20
NSN: 5330-00-202-3816
FSC: 5330 — Packing and Gasket Materials
CAGE: 38597 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY RETAINER
constructionTWO-PIECE
outside_diameter1.750 INCHES NOMINAL IN
surface_treatmentANODIZE RETAINER
retainer_thickness0.040 INCHES NOMINAL IN
packing_inside_diameter1.520 INCHES NOMINAL IN
retainer_inside_diameter1.670 INCHES NOMINAL IN
packing_ring_cross-sectional_diameter0.260 INCHES NOMINAL IN
NSN5330-00-202-3816
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RTC2146A20 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
•
RETAINER INSIDE DIAMETER: 1.670 INCHES NOMINAL IN
•
PACKING INSIDE DIAMETER: 1.520 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
PACKING RING CROSS-SECTIONAL DIAMETER: 0.260 INCHES NOMINAL IN
•
RETAINER THICKNESS: 0.040 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE RETAINER
•
MATERIAL: RUBBER SYNTHETIC PACKING
TECHNICAL CHARACTERISTICS
RETAINER INSIDE DIAMETER1.670 INCHES NOMINAL IN
PACKING INSIDE DIAMETER1.520 INCHES NOMINAL IN
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
PACKING RING CROSS-SECTIONAL DIAMETER0.260 INCHES NOMINAL IN
RETAINER THICKNESS0.040 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE RETAINER
MATERIALRUBBER SYNTHETIC PACKING
MATERIALALUMINUM ALLOY RETAINER
CONSTRUCTIONTWO-PIECE
SUBSTITUTES & CROSS-REFERENCES 1
2146-20Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RTC2146A20?
RTC2146A20 is a PACKING WITH RETAINER.
What parts can replace RTC2146A20?
There is 1 known substitute for RTC2146A20: 2146-20. Substitute compatibility should be verified for your specific system.
What is the NSN for RTC2146A20?
RTC2146A20 is cataloged in the U.S. Government catalog under NSN 5330-00-202-3816. 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.