Appliance Resin Supplier: PP, ABS, PC, PBT

How we help appliance manufacturers

Appliance programs run for years, and many parts carry a listing that belongs to one grade: a UL 94 rating, glow-wire values for parts that hold live connections, or a food-contact letter for liners, bins and water paths. We work with OEM engineers and buyers and with the molders who run their parts. We quote the exact grade named on your drawing or in your end-product file when it is available, and before we offer a substitute we check its listing, glow-wire values and FDA letter against your wall thickness, color and food zone. A polymer chemist reviews every quote. We can ship straight to your molder, and every lot from our suppliers ships with a COA.

Materials we commonly source for this industry

Polypropylene: talc-, mineral- and glass-filled, impact copolymer
ABS and HIPS, including stress-crack-resistant liner grades
PC/ABS and polycarbonate (FR and non-FR)
FR PBT and FR nylon 66 with glow-wire values
Acetal copolymer for wheels, gears and water valves
Modified PPE and PPS for hot water and pump parts
ASA and PC/ASA for outdoor units
GPPS and SAN for clear bins and drawers

Typical parts and the resins behind them

Part	Typical resins	What drives the choice
Washer outer tubs, agitators and dispensers	Talc-filled PP; glass-filled PP for stiffer, high-spin designs; unfilled or lightly filled PP for agitators and detergent drawers	Stiffness and creep in hot, wet service, detergent resistance, and cost. Inner baskets are mostly stainless steel.
Dishwasher tubs, racks and spray arms	Talc-filled PP for plastic tubs and tub floors; PP for spray arms and rack parts; acetal for rack wheels and sliding parts	Hot water and detergent over many cycles, low friction where parts slide or turn, food contact.
Refrigerator cabinet and door liners	HIPS or ABS sheet, thermoformed; stress-crack-resistant grades	Resistance to the foam blowing agent behind the liner and to fats and oils inside, gloss, and sheet extrusion and forming behavior.
Crisper drawers, door bins and shelf trim	GPPS, SAN, clarified PP; copolyester in some designs	Clarity, stiffness, resistance to food oils and cleaners, food contact.
Freezer and ice-maker parts	Impact copolymer PP, ABS, HIPS; acetal for ice-maker mechanisms	Impact at freezer temperature. PP homopolymer turns brittle near 0°C / 32°F.
Range and oven knobs, handles and trim near heat	Glass-filled PBT or PA66, PPS at the hottest spots; plated ABS where the part stays cool; thermoset phenolic in some handles	Heat at the part’s hottest spot, surface finish, holding screws and inserts.
Small-appliance housings, jars and lids (coffee makers, blenders)	PP (often talc-filled), ABS, PC/ABS for housings; copolyester, PC or SAN for clear jars; PP for lids and filter baskets	Cosmetic finish and color, heat near the heater plate, impact, food contact for jars and water paths.
Terminal blocks, switch housings and connectors	FR glass-filled PA66 or PBT	Glow-wire values (GWFI, GWIT), CTI, holding screw torque.
Fans, blower wheels and HVAC air-handling parts	Glass-filled PP or PA66; FR grades where the product standard calls for them	Stiffness and creep at speed, balance, flame rating on some HVAC parts. Many outdoor condenser fan blades are metal.
Outdoor grill and HVAC exterior parts	UV-stabilized ASA or PC/ASA, UV-stabilized PP; glass-filled nylon for grill handles	Sunlight, heat from the sun or the firebox, cold impact.
Pumps, valves and water-path parts	Glass-filled PP, modified PPE or PPS; acetal copolymer for valve parts	Hot water, chlorinated water and detergent over time, dimensional stability, potable-water listing where required.

Typical choices only. Designs differ between makers and models, and grades within each family vary widely, so confirm properties on the data sheet for the exact grade.

What to specify

Appliance parts are usually bought against a drawing, a material callout and the appliance maker’s approved materials list. Ask for these by grade, thickness and color.

Flame rating and glow wire. IEC 60335-1, and UL 60335-1 where it applies, can require glow-wire performance for insulating parts that support current-carrying connections, with the strictest requirements in appliances that run unattended, such as washers, dryers, dishwashers and refrigerators. For connections carrying more than 0.2 A, the usual route is a material with a GWFI of at least 850°C / 1,562°F and a GWIT of at least 775°C / 1,427°F at the part’s thickness, or a glow-wire test on the finished part. Attended appliances generally face less demanding tests. GWFI and GWIT are listed by grade and thickness, and a V-0 grade does not automatically meet them. Check the edition and the Part 2 standard that apply: in North America refrigerators (UL 60335-2-24) and much HVAC equipment (UL 60335-2-40) now use the 60335 framework, while some product types, such as dishwashers (UL 749), still have their own UL standard. See UL 94 ratings explained.
Food contact, by grade. Liners, bins, ice parts, jars and water paths need the producer’s FDA letter for the exact grade, covering your food type and temperature. Colorants and additives need their own statements at your let-down ratio. See what FDA compliance means.
Hot water and detergent resistance. Standard PBT, PET, polycarbonate and nylon lose properties in hot water, and producer literature puts the limit for many standard grades at about 60°C / 140°F. Wash and water parts usually run stabilized PP, acetal copolymer, modified PPE or PPS. Ask for hot-water and detergent aging data for the grade. See best plastic for hot water.
Stress-crack resistance. ABS, HIPS, PC and PC/ABS can crack at molded-in stress when they meet cooking oils, fats, cleaners or, for liners, the foam blowing agent. Ask for stress-crack-resistant grades and test with the real chemicals. See environmental stress cracking.
Color and gloss. Visible parts have to match across lots, molders and neighboring parts. Agree a color standard and gloss level, and whether the part runs precolored resin or masterbatch. Flame listings are color-specific. See masterbatch vs. precolored resin.
Regrind policy. For UL-recognized parts, UL 746D generally allows up to 25% in-house regrind of the same grade. Food-contact parts and many customer specifications are tighter. See regrind limits by resin.
Listings in the end-product file. The grade named in your UL file or on the appliance maker’s approved list is the one the approval rests on. A substitute with the same rating can still need a review, so name alternates in the file where you can.
Lot traceability. Every lot from our suppliers ships with a COA. Have the molder record which lot went into which run, so a field problem can be traced back. See what a COA shows.

Guides for this industry

Best plastic for electrical housings: flame rating, RTI, CTI and glow wire by resin.
UL 94 flame ratings explained: HB through 5VA, thickness, color and the yellow card.
Getting a UL 94 flame rating: choosing an FR grade for a part that needs one.
Best plastic for hot water: which resins survive hot water, steam and chlorine.
Best plastic for food containers: food-contact resins by temperature, with the dishwasher and freezer in mind.
PP homopolymer vs. impact copolymer: stiffness against cold impact, by melt flow.
Best plastic for outdoor enclosures: housing resins for sun, heat, cold and water.
Environmental stress cracking: why parts crack around oils, cleaners and other chemicals.

Shipping to your molder

Many appliance OEMs buy the resin themselves and have it shipped to the molder. Put the molder’s city in the ship-to field, their name in the part or product field and your PO number in the details, and send the lot’s COA to both your quality file and the molder. Agree drying, regrind and the scrap allowance with the molder first. See supplying resin to your molder.

Common questions

What plastic is used for washing machine tubs?

Plastic outer tubs are usually talc-filled polypropylene, with glass-filled PP used in stiffer, high-spin designs or in the parts of the tub that carry the most load. The inner basket is mostly stainless steel. The grade has to hold its stiffness in hot, wet service with detergent, so ask for its hot-water and creep data.

Do appliance parts need a glow-wire rating?

Often, yes. IEC 60335-1, and UL 60335-1 where it applies, call for glow-wire performance on insulating parts that support current-carrying connections. In unattended appliances, parts holding connections over 0.2 A typically need a material GWFI of at least 850°C / 1,562°F and GWIT of at least 775°C / 1,427°F, or a glow-wire test on the finished part. Check the edition and Part 2 standard for your product, and read the values for the grade at your thickness.

What plastic is used for refrigerator liners?

Most liners are thermoformed from HIPS or ABS sheet. The polyurethane foam blown in behind the liner, and the fats and oils inside, can stress-crack standard grades, so liner sheet is made from stress-crack-resistant grades. Test with your foam system and ask for the producer’s FDA letter for the exact grade.

Which plastics hold up to hot water and detergent?

Polypropylene, acetal copolymer, modified PPE and PPS are the usual choices for wash and water parts. Standard PBT, PET, polycarbonate and nylon lose properties in hot water, and many standard grades are limited to about 60°C / 140°F. Limits depend on the grade, the stress in the part and the water chemistry, so test parts under real conditions.

Can you ship resin straight to our molder?

Yes. Put the molder’s city in the ship-to field and their name in the part or product field. Every lot from our suppliers ships with a COA, which you can send to the molder and keep in your own quality file. We aim to send your quote within one to three business days.

If your grade is not listed, tell us what you run. We source commodity, engineering and specialty resins.

Resin sourcing for appliances