There are a total of ten different varieties of silicone rubber tubing, using the English abbreviation is: NR, IR, BR, SBR, NBR, IIR, EPDM, CR, SR, FKM. then, how to identify these ten types of silicone rubber tubing? Qiyu silicone rubber manufacturers to teach you a method: burning. The signs when they go out are as follows.

1, NR: surface; light yellow translucent. Combustibility; easy. Flame characteristics; black smoke, dark yellow flame, softening. Residue smell; rubber odor, residue without stickiness.

2, IR: surface; light yellow translucent. Combustibility; easy. Flame characteristics; black smoke, dark yellow flame, softening. Residue breath; rubber odor residue without stickiness.

3、BR: surface; pale yellow translucent. Combustibility; easy. Flame characteristics; black smoke, dark yellow flame, softening. Residue scent; residue without stickiness.

4、SBR: surface; light yellow, or light brownish red translucent. Extinguishability; easy. Flame characteristics; black smoke, dark yellow flame, softening. Residue breath; styrene odor, slightly contracted, no stickiness

5, NBR: surface; light yellow-light brown, translucent. Combustibility; easy. Flame characteristics; black smoke, dark yellow flame, softening. Residue breath; protein quenching breath, no stickiness.

6, IIR: surface; colorless, transparent-translucent. Combustibility; easy. Flame characteristics; smokeless, scattered beam flame. Residue breath; melting, sweet odor breath.

7、EPDM: surface; red, opaque. Combustibility; smokeless, scattered beam flame, flame is blue. Residue breath; white wax breath.

8, CR: surface; light yellow-light brown, opaque. Combustibility; difficult. Flame characteristics; flame is green. Residue breath; contraction, hydrochloric acid breath

9, SR: surface; reddish color. Translucent-opaque. Flammability; medium flammable; flame characteristics; white smoke, bright red flame. Residue breath; white ash, less odor.

10, FKM: surface; reddish, opaque. Combustibility; extremely difficult. Flame characteristics; self-extinguishing, green flame. Residue smell; softening, toxic gas.