Composite sealing washers — metal outer washer bonded (vulcanized) with an EPDM, Neoprene, or NBR elastomer ring, creating a self-sealing fastener interface. Also pure rubber washers for cushioning, vibration isolation, and non-bonded sealing.

Complementary to the Washer and Spring product range. Used where a standard fastener joint must provide water-tight, weather-resistant, or chemical-resistant sealing — automotive body panels, HVAC duct penetrations, industrial sheet-metal roofing, and outdoor enclosure hardware.

Why source through Way Fast

We serve Tier 1 and Tier 2 automotive suppliers — primarily to North American OEM programs, including platforms shared with European and Japanese brands — with day-to-day experience handling the documentation and tolerance standards these projects demand.

01 · Multi-source capacity

Working with multiple qualified manufacturing partners — we match each order to the best-fit production line, stabilizing lead times and cost when single-source capacity tightens.

02 · Submission-grade documentation

Full support for PPAP (Levels 1–3), IMDS submission, and RoHS / REACH documentation.

03 · Audited special-process chain

Partners certified to AIAG CQI-9 (heat treat), CQI-11 (plating), and CQI-12 (coating) — covering the full post-processing chain under audited special-process controls.

04 · Multilingual drawing review

Technical drawing review in English, German, Japanese, and Chinese — including ISO 8015 GPS callouts, JIS standards, thread tolerance classes, and coating specifications.

05 · Elastomer selection and bond integrity

Elastomer grade (EPDM for weather / UV / ozone, Neoprene for oil and chemical resistance, NBR for fuel exposure), metal backing (galvanized steel, stainless, aluminium, copper), and bond method (vulcanized, compression-molded) matched per customer environmental specification. Drawing-reviewed for temperature range, chemical exposure, and clamp load requirement.

Family coverage · 3 types

Bonded and rubber washer configurations

Bonded Sealing Washer

Metal + vulcanized elastomer

Steel or aluminum outer washer with elastomer ring vulcanized to the ID. Self-sealing when compressed under a bolt head — used on industrial roofing, automotive body panels, and weather-sensitive sheet-metal joints.

Pure Rubber Washer

Cushioning · vibration · gasket

Non-bonded rubber washer in EPDM, Neoprene, NBR, silicone, or natural rubber. Used for vibration isolation, component cushioning, gasket replacement, and non-critical sealing.

Specialty Elastomers

EPDM / Neoprene / NBR / silicone

Elastomer grade selected per environmental exposure — EPDM (UV, ozone, weather), Neoprene (chemical, ozone), NBR (oil, fuel), silicone (high-temperature), natural rubber (general cushioning). Custom compound per programme.

Range

Specifications

Sizes

M3 – M16 bolt size · #5 – 5/8″

Lengths

N/A — washer ID / OD / thickness per DIN / ISO or customer drawing.

Material

Metal backing: galvanized steel, stainless steel (304 / 316), aluminum, copper. Elastomer: EPDM, Neoprene (CR), NBR, silicone, natural rubber — per customer specification.

Finishes

Galvanized (metal backing), passivation (SS), anodization (aluminum), natural rubber color or custom-compounded per programme.

Head types

N/A — washer form per standard or drawing.

Drive

N/A — washer installed under bolt head.

Lead times

Quotation and production

Quotation

Within 5–7 business days from receipt of drawing and specifications.

Sample & production

Schedules issued per project.

Send your drawing, operating environment (temperature, UV, chemical, fuel exposure), metal backing, and target volume — elastomer grade and bond method matched per programme.

Complementary to the Way Fast Washer and Spring range — supplied through qualified manufacturing partners specializing in elastomer-bonded washer production. PPAP / IMDS / RoHS / REACH documentation per customer program.