square round washer

1, against pine function, can resist any long time continuous vibration and screw won't come loose, was by far the best against pine technology.

2, reusable, do not affect fixed against pine function.

3, have excellent chemical resistance, because of its chemical composition is multivariate composite polyamide resin, show inert, general solvent (stupid, ether, ketones, gasoline, diesel oil, acid, alkali etc.) no reaction.

4, resistant to temperature, general product can be stored in 40Co to below zero 80Co its stable performance and special products can save 54Co to below zero 150Co its stable performance.

5, can deposit, usually four years will not change. Performance

6, material, environmental protection coating according to "SGS" inspection, accord with European Union ROHS directive, according to the related testing method, IEC62321.2008 was not detected in cadmium, lead, mercury, hexavalent chromium toxic heavy metals, also do not have detected more than how smelly biphenyl and smelly league stupid ether toxic substances, belong to the environmental friendly products.