IOTA M3054 is a low compression permanent deformation injection-molded liquid silicone rubber specifically designed for seals. It is a two-component product with a 1:1 weight ratio, covering seven hardness levels from Shore A 10 to 70. The product description, 2 Its core advantage is better rebound retention ability under long-term compression, making it suitable for scenarios with high requirements for seal lifespan. Product description, 6
First, compare the key indicators under the same conditions
Model Hardness HA Stretch strength MPa Extension rate % Tear strength KN/m Density g/cm³
Model Hardness HA Stretch strength MPa Extension rate % Tear strength KN/m Density g/cm³
M3054-10 10 5 800 12 1.08
M3054-20 20 7 650 20 1.10
M3054-30 30 7 600 25 1.11
M3054-40 40 8 580 30 1.11
M3054-50 50 10 500 40 1.12
M3054-60 60 9 400 35 1.12
M3054-70 70 9 340 32 1.14
The viscosity unit is marked as "23℃, 10S⁻¹", which should be understood as the viscosity value under the condition of 23℃ and a shear rate of 10 s⁻¹. Technical indicators
The meaning of low compression permanent deformation
Compression permanent deformation refers to the residual deformation that rubber retains after being compressed and cannot return to its original shape. The lower the value, the stronger the sealing component's ability to maintain sealing force over a long period. According to the group standard T/FSI 145—2024, the requirements for low compression permanent deformation type are: ≤30% at Shore A 20, and ≤25% at Shore A 30–80; for ultra-low compression permanent deformation type, the requirements are even stricter (≤15% at Shore A 20, and ≤10% at Shore A 30–80).
However, the specific compression permanent deformation values are not listed in the M3054 materials. It is necessary to obtain the actual test data from the supplier and confirm the test conditions (temperature, time, compression rate).
The core difference between M3054 and M3055 A/B
Comparison item M3054 series M3055 A/B series
Comparison item Hardness range (HA) 10–70 Hardness range (HA) 10–70
Core positioning Low compression permanent deformation Sealing component for general use
Hardness level 10–70 HA (7 levels) 10–70 HA (7 levels)
Mechanical properties Exactly the same Exactly the same
Mixture viscosity Exactly the same Exactly the same
Density Exactly the same Exactly the same
Core difference Low compression permanent deformation formula Not specially marked as low-pressure variant
The hardness, viscosity, tensile strength, elongation, tear strength and density data of both are exactly the same. The only difference is that M3054 uses a low compression permanent deformation formula. If the application requires high long-term sealing reliability (such as high-temperature environments, long-term static compression), M3054 should be chosen first; if the requirement for compression permanent deformation is not sensitive, M3055 may have a more cost-effective advantage.
Logical logic for selecting by hardness range
Hardness range Typical characteristics Suitable scenarios
Hardness range Typical characteristics Suitable scenarios
10–20 HA Extremely soft, high elongation Sealing with extremely low contact force, soft touch sealing
30–40 HA Soft, good rebound General sealing pads, flexible joints
50 HA Strength peak (10 MPa tensile, 40 KN/m tear) General sealing components, scenarios requiring balance of strength and elasticity
60–70 HA Relatively hard, good support High-pressure sealing, scenarios with high extrusion requirements
M3054-50 is the strongest mechanical performance level, with a tensile strength of 10 MPa and a tear strength of 40 KN/m, both being the highest in the entire series. Technical indicators
Key verification items for selecting sealing components
Compression-induced permanent deformation
The core selling point of M3054, but the specific values are not provided in the materials. It is necessary to request test data from the supplier and verify it based on the actual operating temperature and compression ratio.
Compression stress relaxation
The ability to maintain sealing force under long-term compression, which is particularly important for static sealing.
Resistance to media
Ordinary silicone has poor oil resistance and will swell when in contact with oils. If the working conditions contain oil or organic solvents, it is necessary to assess whether fluorosilicone should be used as a substitute.
Operating temperature range
Silicone rubber typically has a wide temperature tolerance range (approximately -50°C to 200°C), but the compressive permanent deformation increases with rising temperature. Data on compressive deformation at high temperatures is particularly crucial.
Recovery elasticity
Low compressive permanent deformation is usually accompanied by high recovery elasticity. It is necessary to confirm whether the actual rebound rate meets the requirements for dynamic sealing.
How to verify from samples to mass production
First, agree on the acceptance criteria
Focus on confirming compressive permanent deformation (test temperature, time, compression rate), hardness, tensile strength, tear strength, and the performance of the finished product seal.
Conduct small-scale tests under the same conditions
Keep the currently used materials as the control group, and test under the same injection equipment, curing temperature and time.
Test in real working conditions
After the small-scale tests are successful, verify the stability of the injection equipment, mixing ratio, filling integrity, demolding cycle and long-term sealing reliability.
Write the results in the purchase requirements
Record the approved model, hardness range, curing conditions, acceptance standards for compressive permanent deformation, testing methods and batch traceability requirements.
Prepare information before inquiring from suppliers
Provide a non-confidential application summary: seal type (static/dynamic), temperature range of use, contact medium, target hardness, injection or molding process, whether food-grade or medical-grade certification is required, current sealing failure problems encountered and estimated purchase volume. When there are clear requirements for compressive permanent deformation, it is necessary to specify the test conditions and acceptance standards.
FAQ
1. How to choose between M3054 and M3055?
Both have exactly the same mechanical properties. The core advantage of M3054 is its low permanent compression deformation. If the sealing element needs to be compressed for a long time and has high requirements for sealing life, choose M3054; if the pressure variation requirements are not sensitive, M3055 might be more economical.
2. What is the specific value of the permanent compression deformation?
The data is not listed. You need to request the actual test data from the supplier and confirm the test conditions (such as 175℃×22h, 70℃×72h, etc.).
3. How to choose the seven hardness levels?
For low-pressure sealing, select 30–50 HA; for high-pressure or anti-extrusion, select 60–70 HA; for ultra-soft sealing, select 10–20 HA. M3054-50 has the strongest mechanical properties. Technical indicators
4. Can it be used in food or medical contact scenarios?
The information is not clearly marked. If it is to be used in such scenarios, corresponding compliance documents (such as FDA, LFGB, GB 4806.11, ISO 10993) should be obtained from the supplier.
5. Why is catalyst poisoning avoided?
The platinum-based catalytic system may not cure or the surface may become sticky when in contact with substances containing sulfur, phosphorus, nitrogen, organic tin, etc. Important matters include the base material, release agent, and pigment, which need to be checked in advance.
6. Can the A and B components be mixed across batch numbers?
No. Only components of the same batch number A and B can be mixed and used together. Important note
7. Can it still be used after more than 12 months?
Unopened and stored at a temperature below 23℃, the shelf life is 12 months. After the expiration date, the viscosity, curing performance, hardness and compression permanent deformation need to be tested. Confirmation through small-scale tests is required. Storage and retention period