Graco GC1936 Solvent Resistant O-Ring - Aftermarket Replacement | Bedford 0-3085

Maintain a positive seal on your plural-component spray gun with this solvent-resistant O-ring engineered for the Probler P2 rear piston location. The compound resists common flush solvents and maintains elasticity under pressure cycling to help stabilize trigger feel and spray pattern. This part cross-references Graco GC1936 and is supplied as Bedford 0-3085, providing a cost-efficient aftermarket option that seats cleanly in the specified groove and helps prevent air or material bypass that can lead to pattern flutter.

Aftermarket Solvent-Resistant Compound Plural-Component Duty

Why Choose This O-Ring

  • Formulated to withstand acetone/MEK and typical spray-foam cleaning chemicals.
  • Maintains seal compression under dynamic cycling to reduce leaks and pressure loss.
  • Sized to OEM groove for consistent installation and repeatable service results.

Color: Black solvent-resistant elastomer for easy visual ID during rebuilds.

Typical Compatibility

  • Graco Probler P2 plural-component spray gun - rear piston O-ring location.
  • Commonly deployed on plural-component rigs where P2 guns are specified for SPF or polyurea.
  • Usable on service procedures that reference GC1-936/GC1936 as the sealing ring.

Confirm O-ring location in your gun’s IPL before installation.

What This Product Fits

  • Graco Probler P2 spray gun - rear piston sealing groove (per GC1936 callout).
  • Plural-component proportioners equipped with P2 guns (e.g., Reactor series packages used for spray foam and polyurea when paired with P2).
  • Service kits and assemblies that specify Graco GC1-936 / GC1936 O-ring size.

Cross-reference confirms Bedford 0-3085 as the aftermarket counterpart to Graco GC1-936/GC1936.

Technical Specifications

Aftermarket Bedford 0-3085
OEM Graco GC1936 (also referenced as GC1-936)
FitsProbler P2 spray gun - rear piston O-ring location
TypeSolvent-resistant O-ring, single unit
MaterialHigh-performance solvent-resistant elastomer
FunctionSeals piston interface to prevent air/fluid bypass and pattern flutter
PressureUse within gun/proportioner rated working pressure
BrandBedford Precision Parts (Aftermarket)

Follow your gun’s service manual for torque, lubrication, and assembly orientation.

Installation Notes

  1. Depressurize system and engage trigger lock.
  2. Access rear piston assembly and remove the worn O-ring.
  3. Clean groove and inspect for nicks or burrs.
  4. Lightly lubricate the new ring with approved grease and seat without twisting.
  5. Reassemble and test spray to verify seal integrity.

Tip: Replace paired seals during the same service to maintain balanced compression.

When to Rebuild / Replace

  • Material seepage or air ingress at the piston interface.
  • Flattened, cut, or swollen ring after solvent exposure.
  • Erratic pattern, pressure drop, or trigger stickiness.
  • Visible wear on groove or mating surfaces.

Bedford vs OEM Comparison

FeatureBedford Aftermarket (0-3085)OEM (Graco)
Fit & LocationP2 rear piston groove; GC1-936/GC1936 size classFactory ring for same location
Chemical ResistanceFormulated for common solvents (acetone/MEK)OEM graded elastomer
AvailabilityIf in stock, ships from Bedford Precision Parts in Bedford Hill, New York.Ships via Graco distribution
ValueCost-efficient alternativeOEM program

FAQs

Yes. Bedford 0-3085 is listed as an aftermarket equivalent to the GC1-936/GC1936 O-ring used on Probler P2 guns.
It installs in the rear piston sealing groove on the Graco Probler P2 spray gun. Always confirm location in the IPL before service.
Yes. The solvent-resistant compound is designed for exposure to acetone/MEK and similar flushes used in SPF service routines.
Clean grooves, use approved lubricants, avoid twisting during install, and replace paired seals together for balanced compression.
This listing targets the Probler P2 rear piston location. Check your Fusion IPL; only use if the parts list specifically calls out GC1-936/GC1936.