Product Information
#7 O-Ring SSB399
Compatible with 9 equipment models
- SSB-1000 SSB-1000 Boiler
- SSB-1000TL SSB-1000TL Boiler
- SSB-1000TL-V2 SSB 1000TL V2 Boiler
- SSB-1000-V2 SSB 1000 V2 Boiler
- SSB-255 SSB-255 Boiler
- SSB-399 SSB-399 Boiler
- SSB-512 SSB-512 Boiler
- SSB-800 SSB-800 Boiler
- SSB-800-V2 SSB 800 V2 Boiler
Please note: Hydrowest Products Ltd. is a wholesale distributor and sells exclusively to licensed contractors and trade professionals.
Fast Shipping
In-stock orders ship within 1 business day to anywhere in Canada.
Code-Compliant
All products meet Canadian HVAC and gas code standards.
Wholesale Pricing
Trade pricing for licensed contractors. 40+ years in the industry.
An OEM replacement O‑ring for the Bosch SSB399 gas‑fired condensing boiler, intended as the sealing gasket at service connections and valves to restore leak‑tight seals during maintenance. Description is based on Bosch SSB product and spare‑parts documentation; the exact part number 7738004932 was not located in Bosch North America spare‑parts listings, so please verify the correct OEM part with Bosch technical support or an authorized Bosch distributor. (bosch-homecomfort.com) (bosch-homecomfort.com)
Related Products
Gasket 22,2x30x2
O-ring
Seal (Service cover) WB5-II+
O-ring burner flange (outer ring)
Greenstar Electrode Kit
O-ring 1.23 x 0.14 NBR
Burner sealing
O-ring 13,87x3,53
Lip seal 29,8 x 6,1
Washer
Sealing mounting plate
