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8mm self-adhesive EPDM sponge foam tape
8mm EPDM sponge tape technical data: construction cross-section and typical properties with test methods
Choosing EPDM tape thickness, with 8 mm highlighted in the range shown to scale
EPDM tape widths from stock, 10 mm to 100 mm, shown at true relative width, with an end view showing width and thickness
EPDM tape applications: doors and windows, hatches, enclosures, gaskets, anti-rattle and vibration pads
How to apply EPDM sponge tape in four steps: clean, cut, peel and position, press firmly
8mm self-adhesive EPDM sponge foam tape
8mm EPDM sponge tape technical data: construction cross-section and typical properties with test methods
Choosing EPDM tape thickness, with 8 mm highlighted in the range shown to scale
EPDM tape widths from stock, 10 mm to 100 mm, shown at true relative width, with an end view showing width and thickness
EPDM tape applications: doors and windows, hatches, enclosures, gaskets, anti-rattle and vibration pads
How to apply EPDM sponge tape in four steps: clean, cut, peel and position, press firmly

8mm EPDM Foam Tape | Self-Adhesive Sponge Seal & Gasket Tape | Flashback® Tape

Product Code: FB-EPDM
£11.14 - £77.98
£11.14 Inc VAT
£9.28 - £64.98 Ex VAT
£11.14 - £77.98
£11.14 Inc VAT
£1.11/m Inc VAT £0.93/m Ex VAT
Choose a Width
Choose a Length

UK delivery £3.49 per order, however many rolls you add. Next day £4.95

Not sure which sponge tape you need? Compare EPDM and silicone to help choose the most suitable material for your application.
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Buying in bulk or need a custom width? Request a trade quote

  • Seals gaps
  • Compressible
  • Closed cell
  • Self-adhesive
  • Outdoor use
  • Smooth, clean surfaces

Product Description

Flashback® 8mm EPDM Sponge Rubber Tape is a self-adhesive, closed-cell EPDM foam tape for sealing larger gaps, heavier cushioning, vibration reduction and anti-rattle use.

At 8mm thick it provides substantially more cushioning and compression than the thinner grades, making it useful for larger or deeper gaps, panel protection, softening contact and light impacts between hard surfaces, reducing vibration, and draught reduction where the gap is too big for thinner tape. The closed-cell structure helps seal against water, air and dust, and EPDM's ozone and weathering resistance is rated excellent on our data sheet.

Supplied on 10m rolls in widths from 10mm to 100mm, with wider widths up to 930mm available to order. The single-sided acrylic pressure-sensitive adhesive allows quick application to clean, dry, smooth surfaces, and the finished tape is rated for use from -20°C to +80°C.

View All EPDM Thicknesses | Download EPDM Data Sheet PDF

Key Features

  • 8mm thickness for larger gaps and heavier cushioning
  • Closed-cell EPDM sponge rubber, classified to ASTM D1056 2A1 B3
  • Density 70 to 100 kg/m³
  • Ozone and weathering resistance rated excellent
  • Helps seal against water, air and dust
  • Passes FMVSS 302 flammability test

Is 8mm the Right Thickness?

Choose 8mm when the gap is larger or uneven, or you need heavier cushioning: deeper gap filling, panel protection, protective padding for frames and equipment, vibration reduction and draught reduction where thinner tape won't reach.

Choose a thicker grade when the gap is very large, where 10mm or 15mm will compress into it more reliably. For medium gaps, 6mm is the next step down, or compare all thicknesses.

Important: This is an EPDM sponge sealing and cushioning tape. It is not a roofing seam tape, flashing tape or waterproof membrane tape.

Related Guides

Uses & suitable surfaces

Typical Uses: Door and window sealing, weatherstripping, gasketing, gap filling, access panels, enclosures, machinery cushioning, anti-rattle protection, sound dampening and vibration reduction.

Suitable Surfaces: Metal, painted metal, plastic, UPVC, glass, wood, painted surfaces, panels and frames. For best adhesion, surfaces should be clean, dry and smooth. Always test first where suitability is uncertain.

Not suitable for: Oils, fuels, solvents or aggressive chemicals; electrical insulation, conductive applications or live circuits; submerged conditions; structural fixing or safety-critical applications.

Product specifications

Material: Closed-cell EPDM sponge rubber

Thickness: 8mm

Widths from stock: 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 75mm and 100mm

Wider widths: Up to 930mm to order. Contact sales@flashbacktape.co.uk for lead times and pricing

Roll Length: 10m

Adhesive: Single-sided acrylic pressure-sensitive adhesive

Colour: Black

Temperature Range: -20°C to +80°C

Product Code: FB-EPDM

How to apply
  1. Ensure the surface is clean, dry and free from dust, grease and loose material.
  2. Measure and cut the tape to the required length using scissors or a sharp knife.
  3. Remove the release liner and carefully position the tape before pressing down.
  4. Apply firm, even pressure along the full length.
  5. Allow the adhesive time to bond before placing the tape under compression or stress.

Always test first to confirm suitability for your surface and application. Adhesion varies with surface condition, temperature and environment, so take particular care on dusty, damp, rough, porous, delicate, freshly painted, coated or high-value surfaces.

Certification & product guidance

Material: Closed-cell EPDM sponge rubber

Classification: ASTM D1056 2A1 B3

Density: 70 to 100 kg/m³

Flammability: FMVSS 302 pass

Temperature Range: -20°C to +80°C

Sponge rubber performance (typical values from the EPDM data sheet)

Compression deflection: 20 to 40 kPa at 25%, 50 to 70 kPa at 50% (ASTM D1056)

Compression set: 13 to 18% at 25%, 30 to 45% at 50%, 22 hours at 23°C (ASTM D1056)

Tensile strength: 300 to 350 kPa (ASTM D412)

Elongation: 150 to 180% (ASTM D412)

Water absorption: 1 to 3% (ASTM D1056)

Water, air and dust seal: Excellent

Ozone and weathering resistance: Excellent

Adhesive

Type: Modified acrylic, pressure sensitive

Peel adhesion: Min 21 N/25mm (AFERA 5001)

Temperature resistance: -40°C to +90°C

Data Sheet: Download the EPDM Data Sheet (PDF)

All figures are typical values, not a guaranteed specification. The working range of the finished tape is -20°C to +80°C, set by the sponge rubber. This tape is not certified for electrical, structural, chemically exposed, submerged, automotive safety-critical or load-bearing applications. Suitability depends on surface, compression, temperature, environment and installation. Always test before full use. Flashback Tape accepts no liability for misuse or improper installation.

Frequently asked questions

Is 8mm thick enough for my gap?

8mm suits larger gaps and heavier cushioning, with plenty of material to compress into uneven surfaces. For very large gaps, 10mm or 15mm will compress into the gap more reliably.

What is EPDM foam tape used for?

Sealing, gasketing, cushioning, weatherstripping, gap filling, anti-rattle protection and vibration dampening.

Is EPDM foam tape suitable for outdoor use?

EPDM's ozone and weathering resistance is rated excellent on our data sheet, and the tape is rated for use from -20°C to +80°C, making it suitable for many outdoor and sheltered applications. Always confirm suitability for your specific application.

Is EPDM foam tape waterproof?

Closed-cell EPDM helps resist water ingress, but the finished seal depends on compression, surface contact and installation. It should not be used as a roofing seam, flashing tape, waterproof membrane joint, or in submerged conditions.

Is EPDM the same as neoprene?

No. Both are synthetic rubbers used for sponge sealing tapes, but they suit different conditions. EPDM is generally the better choice for outdoor and weather-exposed sealing, while neoprene is often preferred where oils or fuels are present. EPDM is not suitable for contact with oils, fuels or solvents. Our EPDM vs neoprene vs foam tape guide compares them in detail.

Can EPDM foam tape be cut to size?

Yes. It cuts easily to length with scissors or a sharp knife.

Trade & Bulk Orders

Tell us the widths and lengths or number of full rolls you need, and we’ll reply with a quote. Trade orders can be paid by pro forma invoice.