Midwest Heavy Duty truck parts
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Air Conditioning and Heating / HD Sealing Kits

Shop heavy-duty A/C sealing kits for Class 3-8 trucks, designed to provide leak-free connections and long-lasting protection for your HVAC system. Midwest Heavy Duty offers high-quality OEM-equivalent and aftermarket sealing kits that include O-rings, gaskets, and seals compatible with major brands like Freightliner, Kenworth, Peterbilt, Volvo, and International. Ideal for A/C repairs and component replacements, our sealing kits help maintain proper refrigerant pressure and prevent costly system failures. With fast shipping, expert support, and competitive pricing, we make it easy to keep your fleet’s air conditioning running reliably.

48 products found (Page 2 of 2)

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In stock
Image of A/C O-Ring Kit - 20 PK O-RING from Sunair. Part number: -116GK20
-116GK20

A/C O-Ring Kit - 20 PK O-RING

$6.61
In stock
Image of A/C O-Ring Kit - 10 PK O-RING from Sunair. Part number: -212NK10
-212NK10

A/C O-Ring Kit - 10 PK O-RING

$2.74
In stock
Image of A/C O-Ring Kit - Round from Sunair. Part number: -011.55MOK10
-011.55MOK10

A/C O-Ring Kit - Round

$2.67
In stock
Image of A/C O-Ring Kit - Round from Sunair. Part number: -010.55MOK10
-010.55MOK10

A/C O-Ring Kit - Round

$3.09
In stock
Image of A/C O-Ring Kit - 10 PK O-RING from Sunair. Part number: -214NK10
-214NK10

A/C O-Ring Kit - 10 PK O-RING

$10.33
Image of A/C O-Ring Kit - 20 PK O-RING from Sunair. Part number: -118GK20
-118GK20

A/C O-Ring Kit - 20 PK O-RING

$8.82
Image of A/C O-Ring Kit - 20 PK O-RING from Sunair. Part number: -017X2MGK20
-017X2MGK20

A/C O-Ring Kit - 20 PK O-RING

$7.29
Image of A/C O-Ring Kit - 20 PK O-RING from Sunair. Part number: -016GK20
-016GK20

A/C O-Ring Kit - 20 PK O-RING

$4.42
Image of A/C O-Ring Kit - 20 PK O-RING from Sunair. Part number: -119GK20
-119GK20

A/C O-Ring Kit - 20 PK O-RING

$7.42
Image of A/C O-Ring Kit - Round from Sunair. Part number: -013.55MOK10
-013.55MOK10

A/C O-Ring Kit - Round

$2.38
Image of A/C O-Ring Kit - 20 PK O-RING from Sunair. Part number: -014GK20
-014GK20

A/C O-Ring Kit - 20 PK O-RING

$3.60
Image of A/C O-Ring Kit - 10 PK O-RING from Sunair. Part number: -012.5MNK10
-012.5MNK10

A/C O-Ring Kit - 10 PK O-RING

$3.89