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Precision rubber components being molded at Harkesh Rubber's facility

Case study · HVAC

High-temperature FKM diaphragm for HVAC actuators

For one of the leading thermal-actuator manufacturers in the United States, supplying a world-leading maker of indoor heating and cooling systems.

  • IndustryHVAC
  • ComponentRubber diaphragm
  • MaterialHigh-temperature FKM
  • RegionUnited States

Overview

The client's existing FKM diaphragms turned brittle when exposed to high temperatures in HVAC service. Harkesh formulated a high-temperature-resistant FKM and developed three grades.

All three samples passed testing at the client's facility; the final grade passed the end client's criteria in the very first attempt — enabling a contract of over 2 million USD for our client.

$2M+contract enabled for our client
3FKM grades developed
1stattempt end-client approval

Key outcome:

A high-temperature FKM reformulation that passed the end client's tests in the very first attempt — unlocking a contract worth over 2 million USD.

The challenge

FKM diaphragms turning brittle at temperature

The client faced challenges with one of their FKM diaphragms that had to handle extreme high temperatures. They were supplying these diaphragms to one of the world's leading manufacturers of indoor heating and cooling systems.

The existing FKM diaphragms became brittle on exposure to high temperatures, putting the supply at risk.

Our approach

Reformulate FKM for high heat — across three grades

We analysed the requirements and carefully formulated a high-temperature-resistant formulation for FKM.

To give the client the best chance of a fast approval, we developed samples using three different grades and submitted them for rigorous testing.

The results

All grades passed — approved first time

First time right

Passed first attempt

All three samples passed rigorous testing at the client's facility; the final grade passed the end client's criteria in the very first attempt.

Enabling growth

$2M+ contract

Our quick development and first-attempt success resulted in a contract of over 2 million USD for our client.

Our quick development process and successful testing of the samples in the first attempt resulted in a contract of over 2 million USD for our client.

Materials & application

Where this part fits

Application details

  • Thermal-actuator diaphragm for HVAC systems
  • High-temperature service in heating & cooling equipment
  • High-temperature-resistant FKM formulation
  • Three grades developed for qualification

At a glance

Industry
HVAC
Material
High-temperature FKM
Grades developed
3
Approval
First attempt
Outcome
$2M+ contract

Questions, answered

Frequently asked

They became brittle when exposed to the extreme high temperatures of the HVAC application. We reformulated the FKM to keep its flexibility and sealing performance at temperature.

Developing three high-temperature FKM grades in parallel gave the client and end client options and the best chance of a fast, first-attempt approval — which is exactly what happened.

All three samples passed the client's testing, and the final grade passed the end client's criteria on the first attempt, enabling a contract of over 2 million USD for our client.

Get In Touch contact section

Get In Touch

Address

Mumbai Office: Harkesh Rubber LLP, 108, Adarsh Industrial Estate, Sahar Road, Chakala, Andheri (East), Mumbai 400099

General Enquiries

contact@harkeshrubber.com

Business Phone

+91-22-40060400

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