Appearance: the surface of high quality sealing strip is bright, soft and elastic with high elongation. And inferior product appearance is general, feel soft, resilience is poor, elongation is small. Specific gravity: high quality xinlian seal strip contains EPDM and its specific gravity meets the requirements of the specification; Inferior product contains EPDM less, specific gravity is small. Fixed elongation and tensile fracture strength: high quality seal strip should not be torn, high strength; Inferior appropriate tear, strength is small. Compression deformation: high quality seal strip product compression deformation is small, elastic, good sealing, long service life; Inferior product compression becomes big, resilience is small, sealing sex is poor, service life is short. Seasonal change: when the temperature difference is large, the hardness change of high-quality seal strip is about shao's ±5A. However, when the temperature difference of poor quality is large, the hardness change is about shaw ± 10~15A.
Product application: 1, packaging materials, precision machinery, medical equipment, furniture, glass and other transportation cushioning material with safety cushion, small appliances, etc.) 2, civil, building (residential use big plate gap filling materials, doors and Windows sealing material for residential use, concrete shrinkage with liner material, open channel waterway caulking materials, all kinds of civil building caulking materials, etc.) 3, vehicles, ships, door seal material and seal the luggage storehouse material, hood a cushion, all kinds of pipe sealing materials, lamps and lanterns of sewing materials, engine, instrument of the buffer shockproof materials and sealing materials, etc.), heat insulation, heat preservation (coolers and air conditioner using sealed insulation materials, electric ice 5, sound insulation, moisture-proof (all kinds of mechanical equipment anti-noise sealing materials, residential insulation wall sealing materials, all kinds of electrical appliances waterproof moisture-proof sealing materials, all kinds of mechanical equipment moisture-proof sealing materials).
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