Description: IOTA LSR 6340 is a 40 durometer, liquid silicone rubber designed for producing high clarity, high strength parts through injection process.

Applications：

Respiratory mask

Automotive applications: valves, gaskets, seals

Skin contact parts like liners

Balloons

Cushioning applications

Others

Features:

Good mold release and Easily pigmented

Superior clarity

High performance physicals – high tear and elongation

Rebound resilience characteristics – cushioning and non-tacky

Soft, skin-like feel when molded

Typical Properties:

Properties                                 Test Method        Values

                                                     CTM

Appearance                                                        Clear

Specific gravity                                                    1.12

Extrusion Rate, g/min                                           90

Viscosity

Shear rate 1/sec,Pa.s                                         1800

Shear rate 10/ sec,Pa.s                                      650

                                                                      Press Cured1¹      Post Cured1¹

                                                        ASTM         5minutes, 177℃    4hours,200℃

Hardness, Shore A                        D2240             40                    40

Tensile Strength, psi (N/mm²)      D412              1230(8.5)       1250(8.6)

Elongation at break, %                D412              615                   605

Tear Strength, ppi (N/mm)          D 624, Die B   250(43)          285(50)      

Modulus 100%, psi (N/mm²)        D412               200              200(1.4)

Compression Set, %                     D395B             35                       10

Resiliency, %                                 D2632             62                       52

Packaging: IOTA LSR 6340 is available in 20 kg pails or 200 kg drums.

Storage and shelf life: IOTA LSR 6340 when stored in the original, unopened container at room temperature 24°C (77°F), can be stored for 12 months from the date of manufacturing.

Beyond this date, IOTA no longer guarantees that the product meets the sales specifications.