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MY-FSR is a low compression set fluorosilicone compound designed for seals working in fuel, oil and solvent environments.
Two failure modes often appear together:
A material can pass a simple oil-immersion test and still show unacceptable compression set at operating temperature.
Therefore, both properties should be evaluated under real service conditions.
MY-FSR is a fluorosilicone compound based on fluorosilicone gum with various fillers and additives.
Its published product information includes:
|
Item |
MY-FSR-40S |
MY-FSR-50S |
MY-FSR-60S |
MY-FSR-70S |
|
Hardness (Shore A) |
40 ± 5 |
50 ± 5 |
60 ± 5 |
70 ± 5 |
|
Tensile strength (MPa) |
≥ 9 |
≥ 9 |
≥ 9 |
≥ 9 |
|
Elongation (%) |
≥ 380 |
≥ 300 |
≥ 230 |
≥ 200 |
|
Tear strength (kN/m) |
≥ 20 |
≥ 20 |
≥ 20 |
≥ 20 |
|
Fuel C volume change (23°C × 72 h, %) |
≤ 20 |
≤ 20 |
≤ 20 |
≤ 20 |
|
Compression set (25%, 177°C × 22 h, %) |
≤ 10 |
≤ 10 |
≤ 10 |
≤ 10 |
Reference vulcanization: 0.7% DBPH, 170°C × 15 min, post cured 200°C × 4 h.
Service temperature range is described as −60°C to 200°C.
These are typical values, not guaranteed specifications for every batch or for the finished part.
Aviation seals — fuel and oil resistant contacts and seals on aircraft.
Automotive components — sealing rings, oil seals, diaphragms, conduits and valve linings.
Petrochemical equipment — pump, valve and tank seals exposed to high temperature, low temperature and chemical media.
Medical devices — selected device components requiring fuel and solvent resistance.
MY-FSR is a raw compound; the finished part must be qualified for the specific application.
A controlled comparison is recommended.
Mold test specimens from MY-FSR and your current compound using consistent conditions, then compare:
The final decision must be based on application-specific testing rather than the compound name alone.
1. Is MY-FSR a finished seal?
No. It is a fluorosilicone compound for molding and further processing.
2. What compression set can be expected?
The published value is ≤ 10% (25% deflection, 177°C × 22 h, ASTM D395). Actual parts must be tested.
3. Which hardness grades are available?
40, 50, 60 and 70 Shore A grades are listed.
4. What should buyers provide when requesting a sample?
Provide the working media, temperature range, seal geometry, molding process and target performance.
Low Compression Set Fluorosilicone Compound MY-FSR
Product page: https://www.kimiter.com/product-low-compression-set-fluoro-silicone-compound-my-fsr-.html
Contact the IOTA team with your application requirements to discuss the next steps for material evaluation.
