Insulating Washer Supplier

Flat non-conductive insulating washers for electrical isolation, equipment assembly, and fastening applications requiring reliable separation. Typical use includes Electrical isolation, panel assembly, transformer and switchgear components. Heat-resistant industrial material selected for insulation, sealing, protection or maintenance use. Clean-cut edges; fabrics and sleeves can use sewn, coated or reinforced edges where the product format requires it. Recommended operating range: -40°C to 180°C (typical, depending on material grade)

Technical Specifications

Product Parameters

Material	Electrical insulating composite material
Temperature Range	-40°C to 180°C (typical, depending on material grade)
Size Options	M5, M6, M8 and other common sizes; custom inner diameter, outer diameter, and thickness available
Color Options	White, beige, orange, and custom colors
Lead Time	7-15 days
Customization	Custom ID, OD, thickness, shape, color, material grade, labeling, and packaging
MOQ	500 pcs
Packaging	Carton packing, bulk packing or export packing can be discussed by order requirement.

Purchasing and Engineering Notes

Insulating Washer Procurement Details

Applicable sizes and tolerance	M5, M6, M8 and other common sizes; custom inner diameter, outer diameter, and thickness available. Typical cut tolerance: +/-1 mm for sheets and parts; roll and sleeve lengths use normal production tolerance.
Structure, surface and edge	Heat-resistant industrial material selected for insulation, sealing, protection or maintenance use. Clean-cut edges; fabrics and sleeves can use sewn, coated or reinforced edges where the product format requires it.
Reinforcement	Fiberglass reinforcement: not used unless stated in the selected material construction.
Material selection	Material selection is matched to the required temperature, chemical exposure, mechanical load and installation method.
Recommended use temperature	-40°C to 180°C (typical, depending on material grade)
Packing and carton reference	1,000 pcs per labeled bag; 5,000-10,000 pcs per carton
Standard MOQ	500 pcs
Custom MOQ	5,000 pcs
Sample policy	USD 15-25 plus freight for mixed samples
Production cycle	Stock: 3-7 days; custom die-cut: 10-15 days
Available test and inspection files	Material declaration, dimensional inspection record, visual inspection photos and packing list.
Typical purchasing teams	Thermal-equipment OEMs, electrical contractors, maintenance distributors and industrial service companies.

Ready Stock & Standard Sizes

Available Stock Specifications

The following specifications are available for quotation. MOQ and lead time are listed by standard size and custom requirement.

Request Stock Quote

SKU / Model	Size	Available Specification	Material	MOQ	Lead Time	Quotation Note
IW-M5-WH	ID 5 mm / OD 12 mm / T 2 mm	Flat insulating washer	Electrical insulating composite	500 pcs	7-15 days	Common size for light-duty fastening and electrical isolation
IW-M6-BE	ID 6 mm / OD 16 mm / T 2 mm	Flat insulating washer	Electrical insulating composite	500 pcs	7-15 days	Standard stock size for panels and equipment assembly
IW-M8-OR	ID 8 mm / OD 20 mm / T 3 mm	Flat insulating washer	Electrical insulating composite	500 pcs	7-15 days	Suitable for higher mechanical support requirements
IW-CUSTOM	Custom ID / OD / thickness	Custom insulating washer	Composite insulation material	500 pcs	7-15 days	OEM dimensions, shapes, and packaging available

Note: MOQ and lead time are based on the listed size, order quantity and packing requirement.

Send specification for quotation ->

Applications

Typical Applications

Electrical isolation
panel assembly
transformer and switchgear components
machinery fastening
industrial equipment maintenance
spacer and sealing support

Customization Options

Size / Material / Color / Packaging / Logo

Send Requirement ->

Custom programme: Custom ID, OD, thickness, shape, color, material grade, labeling, and packaging. Size and tolerance reference: M5, M6, M8 and other common sizes; custom inner diameter, outer diameter, and thickness available. Typical cut tolerance: +/-1 mm for sheets and parts; roll and sleeve lengths use normal production tolerance. Packing and production reference: 1,000 pcs per labeled bag; 5,000-10,000 pcs per carton Stock: 3-7 days; custom die-cut: 10-15 days

Size M5, M6, M8 and other common sizes, custom inner diameter, outer diameter, and thickness available
Material Electrical insulating composite material
Color White, beige, orange, and custom colors
Packaging Carton packing, bulk packing or export packing can be discussed by order requirement.
Logo Logo, label or buyer mark can be discussed by order requirement

FAQ

Frequently Asked Questions

What is your MOQ for custom insulating washers?

The standard custom MOQ is 500 pcs per size. Lower trial quantities may be available for common stock dimensions.

Can you produce washers in custom inner and outer diameters?

Yes. We can customize inner diameter, outer diameter, thickness, color, and material grade according to your drawing or sample.

Are standard sizes available from stock?

Yes. Several common flat washer sizes are available as standard stock options. Please send your required dimensions for stock confirmation.

Can you provide bulk packaging or private label packing?

Yes. Bulk bags, small box packing, carton labeling, and other OEM packaging options can be arranged for wholesale orders.

What are the standard and custom order quantities for Insulating Washer?

Standard MOQ: 500 pcs. Custom MOQ: 5,000 pcs. Stock: 3-7 days; custom die-cut: 10-15 days.

What packing and technical files can be supplied with Insulating Washer?

1,000 pcs per labeled bag; 5,000-10,000 pcs per carton Available files include: Material declaration, dimensional inspection record, visual inspection photos and packing list.