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Thermo King Genuine OEM Compressor Throttling Valve & Suction Screen O-Ring Seal — 331221 (PACK OF 8)


Sale price $11.99 Regular price $17.99
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Description

Maintain absolute pressure containment within your transport refrigeration system with the Thermo King Genuine OEM Compressor Throttling Valve & Suction Screen O-Ring Seal (Part 331221). Available as a bulk-savings pack of 8, these factory-original O-rings provide the critical airtight barrier required where the throttling valve and suction screen meet the main compressor housing. Molded from an advanced, low-permeability elastomer compound, they prevent expensive refrigerant leaks and block external atmospheric moisture from contaminating your cooling loop. Swapping these single-use seals during routine suction screen cleanings protects your compressor from high-pressure stress, ensuring your reefer maintains peak cooling efficiency over long cross-country hauls.

⭐ Key Features & Benefits
  • Genuine OEM Precision: Engineered specifically to meet factory-rated thickness and durometer tolerances, preventing the premature compression sets common in generic rings.
  • Refrigerant & Oil Compatible: Formulated from specialized elastomers that stand up to continuous exposure to modern synthetic oils and synthetic refrigerants like R404A and R452A.
  • Bulk Pack of 8: Ideal inventory pack for high-volume service shops, mobile tech trucks, and fleet depots conducting multi-unit compressor overhauls.
  • Leak-Free Resilience: Retains its sealing profile under radical thermal fluctuations ranging from freezing cargo modes to intense engine bay heat.
  • Prevents Pressure Drops: Eliminates minute vacuum micro-leaks at the compressor inlet, protecting the system from low-pressure shutdowns.

🔧 Uses / Applications
  • Suction Screen Servicing: Essential replacement seals whenever the compressor suction screen is pulled for routine metal debris inspection.
  • Throttling Valve Rebuilds: Forms the primary mechanical face seal during installation or replacement of the compressor throttling valve (TV).
  • Reefer Trailer Maintenance: Fits high-capacity trailer and container refrigeration systems utilizing X214, X426, and X430 reciprocating compressor lines.
  • Preventative Fleet Overhauls: Keeps your parts cage stocked with high-turnover seals required for everyday preventive maintenance schedules.

📊 Technical Specifications
Specification Detail
Part Type Compressor Throttling Valve & Suction Screen O-Ring
Position Compressor Inlet / Throttling Valve Housing Face
Part Number 331221 / 33-1221 / 33-0221 / 331221TKA
Material Premium Low-Permeability Fluoropolymer Elastomer
Fitment Direct-Fit OEM Thermo King Compressor Platforms
Condition Brand New (Genuine OEM Overstock / Bulk Pack Liquidation)
Installation Drop-In Channel Seating (Lubricate with Compressor Oil Prior to Assembly)

🔄 Cross-Reference / Interchange Table
Manufacturer Equivalent Part Number
OEM (Thermo King) 331221, 33-1221, 33-221, 331221TKA, TK331221
Associated Components 221008 (Compressor Throttling Valve), 664971 (Suction Screen)
Compatible Compressors Thermo King X214, X418, X426, X430 Series
Additional Notes Sold as an 8-piece pack. Always clean and verify the machining channel groove is free of old rubber residue before applying the new seal.

Disclosure Policy

This product was acquired by Freeman Liquidators from a sale of merchandise subject to a commercial insurance loss. Freeman Liquidators is a secondary seller of products, is not affiliated with or sponsored by the manufacturer of the products and is not a manufacturer authorized seller of the products. Sale of this product by Freeman Liquidators is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser.

All products are NEVER USED but external packaging will have damage. Some items may be placed into other packaging to ensure safe shipping. All items are opened for inspection prior to shipment to ensure the best quality of products. Freeman Liquidators guarantees your satisfaction. If you are not completely satisfied with a purchased product, within 30 days from the date of purchase, return the product in its packaging and Freeman Liquidators will fully refund your money.

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Thermo King Genuine OEM Compressor Throttling Valve & Suction Screen O-Ring Seal — 331221 (PACK OF 8)

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