EPDM Sponge Rubber O Ring Cord Seal

Category： EPDM PVC products for auto
Product description：Foam Sponge silicone rubber cord plays a crucial part in sealing gap throughout a multitude of different industrial sectors. It seals against any ingress of water or air. Sponge strip have a closed
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Closed‑cell EPDM sponge rubber cord is extruded round foam profile. It can be cut and jointed by hot vulcanization or cold glue to produce custom‑size foam O‑rings. Featuring soft compressibility, excellent UV & ozone resistance, it creates airtight & watertight sealing for uneven gaps across automotive, construction and industrial equipment.

Key Features

Closed‑cell foam structure, low water absorption, waterproof, dust‑proof & sound‑insulating
Outstanding weather & ozone resistance, stable for long‑term outdoor service
Soft compressibility, requires low clamping pressure, fits irregular gaps
Wide working temperature: ‑40℃ ~ +120℃, good compression recovery
Available for two splicing processes: hot vulcanized seamless joint / cold glued joint
Custom diameters, colors and roll lengths available

Technical Specifications

Material: Closed‑cell EPDM sponge rubber
Density: 0.5‑0.7 g/cm³
Cross‑section: Round cylindrical
Diameter: 2‑30 mm (custom sizes supported)
Hardness: 20‑40 Shore A
Standard Color: Black; white/grey/red optional
Roll length: 100m / 200m / 500m per coil

Applications

Automotive door, trunk, RV & boat hatch weather seals; aluminum window & container door gaskets; electrical cabinet, machinery enclosure waterproof & dustproof sealing; HVAC duct gap filling; marine lighting fixtures; concrete expansion joint backer rod, vibration buffering.

Frequently Asked Questions About EPDM Sponge O Ring Cord

Q1: What is EPDM sponge o ring cord used for?

A: It is soft extruded foam rubber rope cut and jointed into custom foam o-rings for weatherproof, dustproof, sound insulation and gap filling sealing, widely used on auto, construction doors, machinery cabinets and outdoor equipment.

Q2: Can I get finished foam o-rings instead of raw cord rolls?

A: Yes. We provide two splicing processes: hot vulcanized seamless sponge o-rings and cold glued o-rings, any inner diameter size customized.

Q3: Is EPDM sponge cord oil resistant?

A: Standard EPDM sponge resists water, steam, UV but not mineral oil. If oil contact is required, we supply NBR nitrile sponge cord as alternative.

Q4: How long does EPDM foam sponge seal last outdoors?

A: Premium EPDM closed-cell sponge features excellent ozone & UV resistance, stable performance over 5–8 years under outdoor sunlight exposure without cracking.

Q5: What size diameters of EPDM sponge cord do you stock?

A: Regular stock diameters from 2mm to 30mm; larger or tiny special sizes can be customized via extrusion mold opening.