- SHORE A
- ±5 pts against the specified hardness
- TENSILE
- Per compound datasheet, tested to ASTM D412
Anti-Vibration Mounts · Made to order
A/C Extractor Damper Weight
Rubber-bonded damper weight for cabin air extractor vents — adds mass at the flap so it stops fluttering and buzzing under airflow, without stiffening it enough to stop the vent working. Moulded and bonded to your drawing at our ISO 9001:2015 plant in Nashik.
- HARDNESS
- To your drawing
- TEMPERATURE
- −40 to +140 °C in EPDM · −40 to +120 °C in neoprene
- MADE TO ORDER
- ISO 9001:2015
- 09111526A
Product gallery
Visual Reference
Loading 3D model…
Drag to rotate · Scroll to zoom
Cross section viewDrawing on request under NDA
- Overall dimensions
- To your drawing or sample
- Bonded insert
- Rubber-to-metal bonding in-house
- Tolerance class
- ISO 3302-1, class agreed per part
Drawing available on request under NDA. Send your part number or a sample and we will return a dimensioned drawing for approval before tooling.
Technical specifications
Engineering Data
- Product Family
- Anti-Vibration Mounts
- Material
- Compound dependent, see options below
- Hardness (Shore A)
- To your drawing — 40–60 Shore A typical, so the flap still lifts
- Tensile Strength
- Per compound datasheet, tested to ASTM D412
- Elongation at Break
- Per compound datasheet, tested to ASTM D412
- Operating Temperature
- Compound dependent
- Compression Set
- Tested to ASTM D395 Method B
- Density
- Per compound datasheet
- Colour Options
- Black standard, custom RAL on request
- Lead Time
- Confirmed with the quotation, from approved drawing and approved sample
- Certifications
- ISO 9001:2015 — certificate 09111526A, valid to 21 February 2027
- Minimum Order
- 10,000 pieces per part number, per compound, or quoted against the part where geometry or tooling makes that unrealistic. Prototype and first-article lots sit outside the minimum.
Dimensional reference
- Overall dimensions
- To your drawing or sample
- Bonded insert
- Rubber-to-metal bonding in-house
- Tolerance class
- ISO 3302-1, class agreed per part
Available materials
Rubber Compound Options
Select the compound best suited to your operating environment and application requirements.
Compound
EPDM
Ethylene Propylene Diene Monomer
Temperature range
−40 to +140 °C
40–90 Shore A
For this part
Ozone and UV resistant through the open vent, and stays flexible to −40 °C so the flap still lifts in winter
Compound
Neoprene
Polychloroprene (CR)
Temperature range
−40 to +120 °C
40–90 Shore A
For this part
Good general weathering; specify where the vent also sees oil mist
Compound
Natural Rubber
Polyisoprene (NR)
Temperature range
−20 to +90 °C
30–80 Shore A
For this part
Best rebound and bond strength — specify where the vent is sheltered from direct UV
Compound
NBR
Nitrile Butadiene Rubber
Temperature range
−30 to +120 °C
40–90 Shore A
For this part
Specify where the position sees oil or fuel
Compound
AEM
Ethylene Acrylic Elastomer (Vamac)
Temperature range
−40 to +175 °C continuous to +160 °C
50–80 Shore A
For this part
Specify only if the vent sits in a high-temperature position
Compound
SBR
Styrene Butadiene Rubber
Temperature range
−30 to +100 °C
40–90 Shore A
For this part
Poor ozone resistance — cracks at an open vent aperture
Compound
FKM
Fluoroelastomer (Viton)
Temperature range
−20 to +250 °C continuous to +200 °C
60–90 Shore A
For this part
Stops at −20 °C — the wrong end of the range for an exterior vent, at several times the cost
Compound
Silicone
Vinyl Methyl Silicone (VMQ)
Temperature range
−60 to +220 °C
30–80 Shore A
For this part
Low tear strength — a bonded mass under repeated flap movement will fail at the bond line
Not sure? Send the medium, temperature and load
QUALITY SYSTEM
ISO 9001:2015
certificate 09111526A
Key advantages
Why Specifiers Choose Margo
Stops the flutter
The flap is deliberately light so it lifts at almost no pressure — which is exactly what makes it buzz at road speed. Added mass raises its inertia so airflow pulses no longer move it.
Tuned, not just heavy
Too much mass and the cabin stops venting; too little and the buzz stays. Mass, rubber hardness and the flap’s own opening pressure are set together — send the flap and we quote against it.
Bonded in-house
A steel mass in a moulded rubber body. The bond is what fails first if the compound is wrong — and moulding and bonding happen here, under one set of batch records.
Rated for an open vent
EPDM, −40 to +140 °C. The extractor is open to outside air, and a damper that crazes under ozone or stiffens in the cold changes how the flap behaves.
Industries served
Global Applications
Automotive
Seals, mounts, vibration dampers
Heavy Industry
Conveyor liners, impact buffers
Oil & Gas
Static seals and gaskets for surface equipment
Infrastructure
Sealing profiles, pads and gaskets for plant and building services
Manufacturing process
From Compound to Certification
Material compounding
Polymer blending, additive integration and batch QC in our in-house lab. Damping is set here — a vibration weight works by turning movement into heat, so the compound is chosen for loss rather than for bounce.
Mould design & CNC
Precision steel tooling manufactured in-house and held as a controlled record.
Moulding
Injection, compression or transfer, selected for the part geometry. For this part: transfer moulded with the steel mass bonded in — transfer is the correct process for a part with an insert, and it is one of the three Margo runs.
Post-cure & trimming
Oven post-cure for dimensional stability, followed by flash trimming.
Quality inspection
Dimensional check, hardness testing and batch sampling before release.
Export packaging
Industrial packing with documentation for international shipping. Bonded assemblies are packed so the metal mass cannot swing against the rubber in transit. ISPM-15 treated pallets where timber packaging is used.
Quality assurance
Certified to International Standards
Every product leaves our facility with a documentation package — material test reports, dimensional inspection sheets and a certificate of conformance — giving traceability from raw material to finished part.
ISO 9001:2015 · Certificate 09111526A
Integral Certification Ltd
Valid to 21 February 2027 · Scope: rubber moulded components
Production metrics
- Since 2005
- In operation
- 60+
- Active clients
- 3–4 weeks from approved sample
- Avg. lead time
Downloads
Technical Documentation
Datasheets, dimensioned drawings and 3D models are issued per part on request, under NDA where required. Tell us the part and the format you work in — PDF, DWG, DXF or STEP — and we will send what we hold.
Request documentationFAQ
Technical & Commercial Questions
Answers to the most common questions from engineering teams and procurement managers worldwide.
What is the minimum order quantity for this part?
We supply in bulk. The minimum run is 10,000 pieces per part number, per compound, or quoted against the part where geometry or tooling makes that unrealistic. Prototype and first-article lots sit outside the minimum.
Can you match a competitor specification or reverse-engineer an existing part?
Yes. Send the physical sample or the drawing and we will produce a dimensioned drawing and confirm compound selection before tooling. A worn part measures smaller than it was made — we dimension to the original intent, not to the wear, and confirm with you first.
What file formats do you accept for drawings?
PDF, DWG, DXF and STEP. A dimensioned 2D drawing with tolerances is enough to quote; a 3D model helps with tooling. If you only have a sample, send the sample — we will produce the drawing.
Do you provide material test reports with each shipment?
Yes. Material test reports, dimensional inspection sheets and a certificate of conformance ship with every consignment, and batch records are retained per shipment. 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 international orders?
TT and LC accepted, discussed per order. Ex-works Nashik or FOB Nhava Sheva. Commercial invoice, packing list and certificate of origin are issued with every consignment.
Related products
You May Also Need
Same compound
Other parts we mould in the same compounds
- Rubber Support Pads — Load-Bearing and Vibration-Isolating · EPDM, Neoprene, Natural Rubber
- Anti-Slip Side Step Pad · EPDM, Neoprene, Natural Rubber
- Commercial Vehicle Suspension Bump Stop · EPDM, Neoprene, Natural Rubber
- Bumper Stopper — Rubber Bump Stop · EPDM, Neoprene, Natural Rubber
- Angle Packing Pad — L-Section · EPDM, Neoprene, Natural Rubber
- Body Mount Pad — to Suit Mahindra Bolero · EPDM, Neoprene, Natural Rubber
Need this part quoted?
Send your drawing or a sample. We confirm compound, hardness and tolerance, then quote against your annual quantity. We respond within 48 hours.