Urethane Supply Company
Plastic Repair and Refinishing
Products since 1981
800-633-3047

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Plastic Identification

This table shows the plastic most often used in automotive applications. Do you have a symbol that is not on this table? Click here for a more complete listing.

Symbol & Type How to identify Typical Usage Suggested Repair Method Repair Tips
PUR, RIM, RRIM Thermoset polyurethane Usually flexible, maybe yellow or gray, bubbles and smokes when attempting to melt. Flexible bumper covers (esp. on domestics), filler panels, rocker panel covers, snowmobile cowls. Method A w/ urethane rod or Method C with Uni-Weld FiberFlex Don't try to melt the base material! Just melt the rod into the v-groove like a hot melt glue.
SMC, UP, FRP Fiberglass Rigid, polyester matrix reinforced with glass fibers, sands finely Rigid body panels, fenders, hoods, deck lids, header panels, spoilers Method E - two-part epoxy repair with fiberglass reinforcement. Use backing plate over holes, layer in fiberglass cloth for extra strength and to approximate thermal expansion
ABS (Acrylonitrile Butadiene Styrene) Rigid, often white but may be molded in any color, sands finely. Very pungent odor when heated. Instrument panels, grilles, trim moldings, consoles, armrest supports, street bike fairings. Method B w/ ABS rod (R03-01-03-WT), or Method D Insta-Weld adhesive repair, or Method E Two-Part epoxy repair Weld repairs may be backed with epoxy for extra strength.
EEBC (Ether Ester Block Copolymer) Flexible, off-white in color, similar in appearance to PUR (Lomod by GE) Rocker cover moldings, bumper extensions (91-96 DeVille) Method C with Uni-Weld FiberFlex (R10-04-03-BK)  
EMA (Ethylene Meth- acrylic Acid) Semirigid, molded in a variety of colors, unpainted (Bexloy W by DuPont) Bumper covers (Dodge Neon 1st generation base model) Method C with Uni-Weld FiberFlex (R10-04-03-BK) or Method B with slivers cut from scrap. Sand entire bumper for refinishing, restore texture with Flex Tex (3803).
PA Polyamide (Nylon) Semirigid or rigid, sands finely Radiator tanks, headlamp bezels, exterior trim finish parts Method B with nylon rod (R06-01-03-NT) Preheat plastic with heat gun before welding, mix rod completely with base material.
PC + ABS Pulse (Polycarbonate & ABS) Rigid, sands finely, usually dark in color Door skins (Saturn), instrument panels, street bike fairings Method B with Polycarbonate rod (R07-01-03-NT), or Methods D or E adhesive repairs Preheat plastic with heat gun before welding with Method B.
PC + PBT Xenoy (Polycarbonate blend) Rigid, sands finely, usually dark in color Bumper covers (primarily Ford products, 84-95 Taurus, Aerostar, some Mercedes and Hyundai's) Method B with polycarbonate rod (R07-01-03-NT), Method C, or Method E adhesive repairs. Preheat plastic with heat gun before welding with Method B.
PE Polyethylene Semiflexible, melts & smears when grinding, usually semi-translucent. Overflow tanks, inner fender panels, valences, interior trim panels, RV water storage tanks, gas tanks Method B with polyethylene rod (R04-01-03-NT) or Method C with FiberFlex (R10-04-03-BK) Applying filler or painting is nearly impossible.
PP Polypropylene Semiflexible, usually black in color, melts & smears when grinding Bumper covers (usually blended with EPDM), inner fenders, radiator shrouds, interior panels, gas tanks Method C with Uni-Weld FiberFlex (R10-04-03-BK) or Method B with polypropylene rod (R02-01-03-BK) Use 1060FP Filler Prep adhesion promoter when applying two-part epoxy filler
PPO + PA Noryl GTX (Nylon blend) Semi-rigid, sands finely, usually off-white in color. Fenders (Saturn & GM), exterior trim Method B w/ nylon rod (R06-01-03-NT), or Methods D or E adhesive repairs Preheat plastic with heat gun before welding with Method B.
TEEE (Thermoplastic Ether Ester Elastomer) Flexible or Semiflexible (Bexloy V by duPont) Bumper covers (especially on domestics, filler panels, rocker panel covers.) Method C with Uni-Weld Fiberflex (R10-04-03-BK) or Method B w/ slivers cut from scrap.  
TPE Thermoplastic Elastomer Semi-flexible, usually black or gray, melts & smears when grinding. Bumper covers, filler panels, underhood parts. Method C with Uni-Weld FiberFlex (R10-04-03-BK) Use 1060FP Filler Prep adhesion promoter before applying two-part epoxy filler.
TPO, EPM, TEO Thermoplastic Olefin Semiflexible, usually black or gray in color, melts & smears when grinding Bumper covers, air dams, grilles, interior parts, instrument panels, snowmobile cowls. Method C with Uni-Weld FiberFlex (R10-04-03-BK) or Method B with PP or TPO rod. Use 1060FP Filler Prep adhesion promoter when applying two-part epoxy filler
TPU, TPU - Thermoplastic Polyurethane Flexible, sands finely Bumper covers, soft filler panels, gravel deflectors, rocker panel covers Method B with urethane rod (R01-01-03-NT) or Method C with Uni-Weld FiberFlex (R10-04-03-BK)  

 

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PETE
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HDPE - high density polyethylene
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PVC - polyvinyl chloride
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LDPE - low density polyethylene
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PP - polypropylene
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PS - polystyrene
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Resins not mentioned above, or a combination of plastics.

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