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Air Conditioning and Heating / O-Rings

Find high-quality A/C O-rings for Class 3-8 trucks, engineered to provide a secure, leak-resistant seal in critical HVAC connections. Midwest Heavy Duty offers a wide selection of durable, refrigerant-compatible O-rings in various sizes and materials, ensuring reliable performance in systems using R134a, R1234yf, and other refrigerants. Compatible with top brands like Freightliner, Kenworth, Peterbilt, Volvo, and International, our OEM-equivalent and aftermarket O-rings are ideal for repairs, replacements, and full system rebuilds. With fast shipping, competitive pricing, and expert support, we help keep your fleet’s air conditioning sealed and running strong.

30 products found (Page 1 of 1)

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In stock
Image of A/C O-Ring Kit - CHRYS/DENSO 10S DISCHARGE GSKT KIT from Sunair. Part number: KT-10SD
KT-10SD

A/C O-Ring Kit - CHRYS/DENSO 10S DISCHARGE GSKT KIT

$2.74
In stock
Image of A/C O-Ring Kit - BOX KIT IMPORT O-RING ASSRTMNT from Sunair. Part number: MORA-12G
MORA-12G

A/C O-Ring Kit - BOX KIT IMPORT O-RING ASSRTMNT

$19.96
In stock
Image of A/C O-Ring Kit - BOX KIT METRIC/STANDARD O-RING from Sunair. Part number: MSI-12G
MSI-12G

A/C O-Ring Kit - BOX KIT METRIC/STANDARD O-RING

$21.78
In stock
Image of A/C O-Ring Kit - LATE GM APPLICATIONS--BAGGED from Sunair. Part number: CP3010B
CP3010B

A/C O-Ring Kit - LATE GM APPLICATIONS--BAGGED

$8.83
In stock
Image of A/C O-Ring Kit - EARLY GM APPLICATIONS from Sunair. Part number: CP3011B
CP3011B

A/C O-Ring Kit - EARLY GM APPLICATIONS

$2.60
In stock
Image of A/C O-Ring Kit - AG O-RING KIT from Sunair. Part number: RK-OR
RK-OR

A/C O-Ring Kit - AG O-RING KIT

$6.71
Image of A/C O-Ring Kit - CHRYS/DENSO 10S SUC/DIS GASKET KIT from Sunair. Part number: KT-10SS/D
KT-10SS/D

A/C O-Ring Kit - CHRYS/DENSO 10S SUC/DIS GASKET KIT

$5.00
Image of A/C O-Ring Kit - COOLPRO BRAND O-RING LATHE CUTS & from Sunair. Part number: CP4013
CP4013

A/C O-Ring Kit - COOLPRO BRAND O-RING LATHE CUTS &

$87.98
Image of A/C O-Ring Kit - EUROPEAN MOLDED SEAL KIT from Sunair. Part number: CP4044
CP4044

A/C O-Ring Kit - EUROPEAN MOLDED SEAL KIT

$45.68
Image of A/C O-Ring Kit - MERCEDES A/C SERVICE ASSORTMENT from Sunair. Part number: KT-MER-07
KT-MER-07

A/C O-Ring Kit - MERCEDES A/C SERVICE ASSORTMENT

$70.78
Image of A/C O-Ring Kit - OPEL/VAUXHALL A/C SERVICE ASSORT from Sunair. Part number: KT-OPVX-07
KT-OPVX-07

A/C O-Ring Kit - OPEL/VAUXHALL A/C SERVICE ASSORT

$78.23
Image of A/C O-Ring Kit - EUROPEAN APPLICATIONS from Sunair. Part number: CP3009B
CP3009B

A/C O-Ring Kit - EUROPEAN APPLICATIONS

$12.71
Image of A/C O-Ring Kit - EARLY CHRYSLER APPLICTAIONS from Sunair. Part number: CP3015B
CP3015B

A/C O-Ring Kit - EARLY CHRYSLER APPLICTAIONS

$3.77
Image of A/C O-Ring Kit - SEALING WASHER ASSORTMENT BOX KIT from Sunair. Part number: CP4018
CP4018

A/C O-Ring Kit - SEALING WASHER ASSORTMENT BOX KIT

$32.66
Image of A/C O-Ring Kit - BOX KIT AUDI/VW R12/R134A SERVICE from Sunair. Part number: KT-AUDI
KT-AUDI

A/C O-Ring Kit - BOX KIT AUDI/VW R12/R134A SERVICE

$34.64
Image of A/C O-Ring Kit - BOX KIT BASIC IMPORT METRIC O-RINGS from Sunair. Part number: BAIM-12G
BAIM-12G

A/C O-Ring Kit - BOX KIT BASIC IMPORT METRIC O-RINGS

$26.61
Image of A/C O-Ring Kit - LATE FORD APPLICATIONS from Sunair. Part number: CP3012B
CP3012B

A/C O-Ring Kit - LATE FORD APPLICATIONS

$9.00
Image of A/C O-Ring Kit - ORIFICE TUBE BOX KIT from Sunair. Part number: CP4015
CP4015

A/C O-Ring Kit - ORIFICE TUBE BOX KIT

$43.60
Image of A/C O-Ring Kit - BOX KIT GM SERVICE ASSORTMENT from Sunair. Part number: GMA-24G
GMA-24G

A/C O-Ring Kit - BOX KIT GM SERVICE ASSORTMENT

$57.75
Image of A/C O-Ring Kit - BOX KIT MASTER ORIFICE TUBE ASSORT from Sunair. Part number: KT-MOTA
KT-MOTA

A/C O-Ring Kit - BOX KIT MASTER ORIFICE TUBE ASSORT

$32.12
Image of A/C O-Ring Kit - STAT SEAL KIT from Sunair. Part number: KT-STAT
KT-STAT

A/C O-Ring Kit - STAT SEAL KIT

$22.44
Image of A/C O-Ring Kit - FORD STANDARD / METRIC O-RING & from Sunair. Part number: CP4012
CP4012

A/C O-Ring Kit - FORD STANDARD / METRIC O-RING &

$22.47
Image of A/C O-Ring Kit - VALVE CORE ASSORTMENT from Sunair. Part number: CP4019
CP4019

A/C O-Ring Kit - VALVE CORE ASSORTMENT

$28.24
Image of A/C O-Ring Kit - HEAVY DUTY ORING/SEALING WASHER AS. from Sunair. Part number: KT-HDOSW
KT-HDOSW

A/C O-Ring Kit - HEAVY DUTY ORING/SEALING WASHER AS.

$26.45
Image of A/C O-Ring Kit - A/C ASST FOR SERV OPEL/VAUXHALL #1 from Sunair. Part number: KT-OPVX01
KT-OPVX01

A/C O-Ring Kit - A/C ASST FOR SERV OPEL/VAUXHALL #1

$38.28
Image of A/C O-Ring Kit - ASIAN APPLICATIONS from Sunair. Part number: CP3008B
CP3008B

A/C O-Ring Kit - ASIAN APPLICATIONS

$7.77
Image of A/C O-Ring Kit - LATE CHRYSLER APPLICATIONS from Sunair. Part number: CP3014B
CP3014B

A/C O-Ring Kit - LATE CHRYSLER APPLICATIONS

$16.80
Image of A/C O-Ring Kit - CAP BOX KIT from Sunair. Part number: CP4016
CP4016

A/C O-Ring Kit - CAP BOX KIT

$16.10
Image of A/C O-Ring Kit - TOYOTA A/C SERVICE ASSORTMENT from Sunair. Part number: KT-TOYOTA-07
KT-TOYOTA-07

A/C O-Ring Kit - TOYOTA A/C SERVICE ASSORTMENT

$42.97
Image of A/C O-Ring Kit - STAT SEAL SINGLE JOB KIT from Sunair. Part number: KT-STATSEAL
KT-STATSEAL

A/C O-Ring Kit - STAT SEAL SINGLE JOB KIT

$13.09