Gaskets · Made to order
EV Battery-Pack & BESS Enclosure Gaskets — Moulded Endless or Extruded with Joined Corners
Lid and housing gaskets for EV traction-battery packs, on-board chargers, charging-station enclosures and battery energy storage (BESS) cabinets. They keep water, dust and wash spray out of long, flat joints. Moulded endless to your pack outline up to 24 × 24 inches, or extruded with joined corners for larger cabinets. Made at our plant in Vilholi, Nashik.
- SEND
- Lid drawing, joint section, closing force or bolt spacing
- MOULDED SIZE
- Up to 24 × 24 in (about 610 × 610 mm)
- TEMPERATURE
- Silicone to +200 °C; EPDM to +140 °C
- FORM
- Moulded endless, or extruded with joined corners
- MADE TO ORDER
- ISO 9001:2015
- 09111526A
Key facts
An EV battery-pack gasket is the lid or housing seal that keeps water, dust and wash spray out of a traction-battery pack, charger or BESS cabinet joint. Margo Rubber moulds battery-pack gaskets endless up to 24 × 24 inches (about 610 × 610 mm) in Vilholi, Nashik.
No gasket alone makes a battery pack IP67, because IEC 60529 rates the tested enclosure, including lid stiffness, bolt spacing and closing force. Margo Rubber sizes the gasket section from the lid drawing, in silicone (−60 to +200 °C) with low compression set, or EPDM to +140 °C.
Product gallery
Visual Reference
What we need from your drawing
- Outline
- To your lid or housing drawing
- Section
- Solid or sponge, to the groove or flange
- Compression
- Set from your closing force or bolt spacing
- Backing
- Plain or self-adhesive
- Large outlines
- Extruded profile with joined corners
Send the lid drawing with the groove or flange section. We size the gasket for the compression your bolts can hold.
Technical specifications
Engineering Data
- Product family
- Gaskets
- Material
- Silicone, EPDM, neoprene; solid or sponge
- Hardness (Shore A)
- To your drawing
- Tensile strength / elongation
- Per compound datasheet, tested to ASTM D412
- Compression set
- Tested to ASTM D395 Method B
- Sponge grades
- To ASTM D1056 or ASTM D6576, as your drawing names
- Operating temperature
- By compound; see the table below
- Declarations
- RoHS declaration for every compound; PPAP on request
- Lead time
- Confirmed with the quotation, from approved drawing and approved sample.
- Certifications
- ISO 9001:2015 (certificate 09111526A) covers our moulded components; extruded profiles with joined corners are outside the certificate scope.
- Minimum order
- Set by part size and tooling, quoted with the part. Prototype and first-article lots sit outside it.
Dimensional reference
- Outline
- To your lid or housing drawing
- Section
- Solid or sponge, to the groove or flange
- Compression
- Set from your closing force or bolt spacing
- Backing
- Plain or self-adhesive
- Large outlines
- Extruded profile with joined corners
Available materials
Rubber Compound Options
Select the compound best suited to your operating environment and application requirements.
| Rank | Compound | Temperature | Choose it when |
|---|---|---|---|
| Default | Silicone | −60 to +200 °C | Pack gaskets near heat, to +200 °C, with low compression set. |
| Leave Silicone if… | the cabinet lives outdoors | — | Specify EPDM (−40/+140 °C) for UV and ozone. |
| Leave Silicone if… | the lid is light and the bolts are far apart | — | Specify a sponge grade, which seals at a lower closing force. |
| Leave Silicone if… | the joint is at a cable entry | — | Neoprene (−40/+120 °C) grommets suit cable entry and weather. |
| Also available | NBR (−30 to +120 °C) · FKM (−20 to +250 °C) · AEM (−40 to +160 °C) · SBR (−30 to +100 °C) · Natural rubber (−20 to +90 °C) | See each compound | The rows above are about which one your part needs. |
Not sure? Send the medium, temperature and load
SERVICE RANGE
−60 to +200 °C
Silicone
Key advantages
Why Specifiers Choose Margo
Endless where the outline allows
Up to 24 × 24 inches moulded in one piece; larger outlines get vulcanised corner joints.
The IP rating is the enclosure’s
IEC 60529 rates the tested enclosure. We size the gasket section and compression to help yours pass; we do not print a rating on a gasket.
Flammability on the drawing
Name the UL 94 or other rating your drawing calls for and we confirm whether a compound route exists. We hold no UL listing.
Paperwork your quality team asks for
RoHS declarations for every compound, PPAP on request, and a test report in every shipment.
Industries served
Global Applications
EV, Energy Storage & Renewables
Traction-battery packs, on-board chargers, charging stations and BESS cabinets
Automotive
Battery and electronics housings on conventional vehicles
Electrical & Electronics
Power-electronics and control-panel enclosures
Manufacturing process
From Compound to Certification
Material compounding
Polymer, fillers and cure system mixed in-house for the medium and temperature on your drawing. Cure is checked on our ODR rheometer.
Tool design
Moulds designed and made for your part and held as a controlled record. When a mould already exists, first samples take 48–72 hours.
Moulding
Compression moulded, with the cavity count set by your volume.
Extrusion
Larger outlines extruded and cured on the line, corners vulcanised.
Trimming
Flash trimmed to the edge condition on the drawing.
Inspection
Dimensions against the drawing, hardness and batch sampling. Results go into the shipment documents.
Export packing
Packed by part number with labels that match the inspection sheet. ISPM-15 treated pallets where timber is used.
Quality assurance
Tested in Our Own Lab, Documented in Every Shipment
Every consignment ships with a material test report, a dimensional inspection sheet and a certificate of conformance. Hardness, tensile and elongation (ASTM D412), density, compression set (ASTM D395 Method B), heat ageing, ozone resistance, fluid swell and low-temperature tests run in our own lab, and cure curves run on our own ODR rheometer. PPAP is available on request. RoHS declarations are issued for all compounds.
ISO 9001:2015 · Certificate 09111526A
Integral Certification Ltd
Scope: rubber moulded components — quality management, not a product approval
ISO 9001:2015, certificate 09111526A, Integral Certification Ltd. Scope: rubber moulded components. It certifies the quality management system, not a product approval.
Certification detailProduction metrics
- 60+
- Active clients
- 48–72 hours
- First samples when the mould exists
- 48 hours
- Quotation from receipt of drawing
Downloads
Technical Documentation
Compound datasheets and part drawings are issued on request, under NDA where required.
Request the datasheetFAQ
Technical & Commercial Questions
Answers to the most common questions from engineering teams and procurement managers worldwide.
What is the minimum order for battery-pack gaskets?
There is no fixed number. The minimum is set by part size and tooling, and we quote it with the part. Send the drawing and your annual volume and you get both figures in one reply. Prototype and first-article lots sit outside the minimum.
Will your gasket make my pack IP67?
No gasket can promise that alone. IEC 60529 rates the tested enclosure: gasket, lid stiffness, bolt spacing and closing force together. Send the lid drawing and we size the section for it.
How large a gasket can you mould in one piece?
Up to 24 × 24 inches (about 610 × 610 mm). Larger outlines are made as an extruded profile with joined corners.
Do you send test reports with each shipment?
Yes, with every consignment: material test report, dimensional inspection sheet and certificate of conformance. Hardness, tensile to ASTM D412 and compression set to ASTM D395 Method B are tested in-house.
What are your payment and delivery terms for export orders?
TT and LC, agreed per order. Ex-works Nashik or FOB Nhava Sheva. The commercial invoice, packing list and certificate of origin (Nashik Chamber of Commerce) travel with every consignment.
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Need this part quoted?
Send the lid or housing drawing, the joint section, the environment and your annual quantity. We respond within 48 hours.