Graco 161578 O-Ring - Aftermarket Replacement | Bedford 0-462

Keep your pump or air motor sealed with this service O-ring sized for common Graco assemblies. The ring restores proper squeeze in the groove to limit bypass and help maintain prime during start-up and steady spray. Cross-referenced as Graco 161578 and supplied aftermarket as Bedford 0-462, it appears in Bulldog-series air motors and multiple Bulldog pump ratios. Install during routine rebuilds to refresh sealing surfaces and support stable pressure control on site.

Aftermarket Precision-Sized Contractor Duty

Why Choose This O-Ring

  • Matches OEM groove dimensions for consistent compression and seal.
  • Helps stabilize pressure and prime across typical duty cycles.
  • Direct cross to the OEM callout for simplified stocking.

Color: Typically black elastomer; confirm material per your model’s IPL.

Typical Compatibility

  • Graco Bulldog Air Motor assemblies.
  • Graco Bulldog pumps: 5:1, 10:1, 30:1 ratios.
  • Any Graco unit whose parts list specifies OEM 161578.

Always verify fitment in your sprayer or pump IPL before ordering.

Technical Specifications

Aftermarket Bedford 0-462
OEM Graco 161578
FitsGraco Bulldog air motors and Bulldog 5:1, 10:1, 30:1 pumps (verify IPL)
TypeO-ring (pump/air motor seal)
MaterialElastomer O-ring (material may vary by model kit)
FunctionSeals mating components to reduce bypass and aid prime retention
PressureUse within the parent assembly’s working-pressure rating
BrandBedford Precision Parts (Aftermarket)

Replace adjacent seals/back-up rings during service to extend maintenance intervals.

Installation Notes

  1. Relieve pressure and isolate air or power to the unit.
  2. Open the joint, clean the groove, and inspect mating faces.
  3. Lightly lubricate the new O-ring with a compatible lubricant.
  4. Seat the ring evenly without twisting or stretching.
  5. Reassemble to torque spec; test for leaks before spraying.

Tip: Use plastic/brass picks to avoid nicking the seal during removal.

When to Rebuild / Replace

  • Loss of prime or creeping pressure under steady load.
  • Seepage at the joint after re-torque.
  • Flat-spotted, brittle, or nicked O-ring found on inspection.
  • Frequent short-cycle priming or air entrainment in lines.

Bedford vs OEM Comparison

FeatureBedford Aftermarket (0-462)OEM (Graco)
Fit & InterfaceSized for the OEM groove and squeezeFactory O-ring to Graco spec
PerformanceSealing performance aligned to applicationSealing performance per OEM
AvailabilityIf in stock, ships from Bedford Precision Parts in Bedford Hill, New York.Ships via Graco distribution
ValueCost-effective service optionOEM program

FAQs

Yes. It cross-references the OEM number shown in the specifications for compatible Graco pump and air motor assemblies.
Graco Bulldog air motors and Bulldog 5:1, 10:1, 30:1 pumps often specify this O-ring. Confirm with your model’s parts list (IPL).
No special tools are required. Use non-marring picks and avoid sharp edges to protect the seal.
No. Always operate within the rated working pressure of the parent pump or air motor assembly.
Stock at least two pieces—one for immediate repair and one as a spare during scheduled maintenance.