Rubber Seal Fabricators, LLC | We Bring Rubber Together
Specializing in Vulcanizing Rubber Profiles

Model PBX Pneumatic Bonders for Bonding Rubber     O-Rings with Standard Diameter or Special Shaped Solid Cross Sections that require Time and Temperature Controls and Die Set Changes for Additional Sizes and Shapes.

  • The PBX Models are benchtop units consisting of a pneumatic vertical press controlled by dual air cylinders and activated by use of a foot pedal thus allowing for hands-free (2-hand) positioning of rubber cord stock.
  • Adjustable air pressure regulator permits a controlled squeeze of the rubber O-Ring cord or extrusion, compensating for any cord stock cross-sectional deviation. Air pressure can be adjusted up to 100 psi, allowing the process squeeze to be regulated based upon the durometer and outside diameter/profile shape of the rubber cord.
  • PBX Bonders contain adjustable time and temperature controls and are available in 2 Models: ANALOG (PBX700A) or DIGITAL (PBX800D) Time and Temperature Controls.
  • (2) heaters; one in each top and bottom platen. Temperature control range of 0 to 400° F (204° C)
  • Both Models contain adjustable timers for automatic separation of the die-sets; ensuring that proper bonding time is maintained.
  • Changeable die set design. (The added "X" in our part numbers indicates models with die change compatibility). Quick, 2-minute, die changes (8 screws)
  • Suitable for NBR (Buna-N), EPDM, CR (Neoprene), VMQ (Silicone), FKM (Viton®) and Sponge Rubber (Open or Closed Cell) Cord Stock Materials
  • Die size: 2 in. wide x 4 in. long (2-pc aluminum)
  • Voltage: 115VAC, 60 Hz., 700 Watts.
  • Overall unit size: 12 in. wide x 12 in. deep x 14 in. high.
  • (3) Changeable Die Set Options are available; including Reversible Standard Inch/Metric, Custom and Blank Die Sets (Ordered separately, please see below)
  • All PBX Die Sets are supplied with proper mounting holes, screws and allen wrench for quick and easy die changes.
Model PBX700A (Analog) Pneumatic Bonder. Die Sets are sold separately
Model PBX700A (Analog) Pneumatic Bonder. Die Sets are sold separately
Model PBX800D (Digital) Pneumatic Bonder. Die Sets are sold separately
Model PBX800D (Digital) Pneumatic Bonder. Die Sets are sold separately

(3) Die Set Options Available:

(Model PBX Bonders are not automatically supplied with a die set. Die Sets must be ordered separately)


A reversible combination die-set that accomodates a total of 16 possible cord sizes with popular AS568 inch sizes on one side and popular metric cord sizes on the opposing sides:

(8) Popular Rubber Cord Standard Inch Sizes including AS568 Sizes: .070, .103, .139, .210 &.275 plus .312, .375 & .500 DIAMETERS.

(8) Popular Metric Cord Sizes: 1.6, 2.0, 2.4, 3.0, 3.5, 4.0, 5.0 & 5.7 mm DIAMETERS.

Die Set Zones
Die Set Zones
PBXDS Standard Reversible Die SetPBXDS Standard Reversible Die Set Side

PBXDS-1 Standard Reversible Die Set
Inches to Metric


A Custom Die-Set for Rubber Extrusions with Special Shaped Cross-Sections and/or O-Rings. RSF can machine to customer drawing specifications. (Allows for special extrusion shapes or multiple duplicate profile cavities for increased production quantities)

Layout to fit within a specified zone shown in the white boxed area in the sketch to the right as 1.750" X 2.950" (44 mm X 75 mm).

Standard PBX Die Block
Custom Reversible Die Set Scale
Custom Reversible Die Set AccessoriesCustom Reversible Die Set
Custom Reversible Die Set
with Mounting Screws and Hex Key
Die Set for Multiple Part Production
Same Cord Stock Diameter Repeated 4 times in
Die Set for Multiple Part Production


A Blank Die-Set with no cavities; allowing customers to machine their own personal sizes. Blank Sie Sets come with proper mounting holes; counterbored on one side. Mounting screws and hex key are also supplied with purchase. RSF recommends that customers maintain a minimum .125 wall thickness between hole/profile cavities when making there own custom hole cavity die sets.

Custom Reversible Die Set Blank Scale