128 mechanical sealDetailed product description：

The main advanced features of the 128 series mechanical seals are the transmission sleeve, moving ring seat, and corrugated pipe. The product has been tested and tested by relevant departments and confirmed by sealing experts, and is worthy of promotion and trust. It can also eliminate concerns about the consequences of water pump maintenance. The product can maintain a minimum service life of two years without water shortage.

Friction materials: hard alloy to silicon carbide or hard alloy to graphite

Technical Parameters
Scope of application: Particle containing media such as water, oil, weak acids, weak bases, etc.
Applicable pressure: ≤ 1MPa
Applicable temperature: Nitrile rubber: -20 ℃~100 ℃
Fluororubber: -40 ℃~200 ℃
Applicable pressure: ≤ 1.5MPa
Applicable speed: shaft diameter ≤ φ 45 ≤ 3000r/min
Shaft diameter ＞ φ 45 ≤ 1450r/min

model	D	d	D1	d1	L	L1	L2
128-18	thirty-three	nineteen	forty	eighteen	twenty-five	eighteen	five
128-20	thirty-five	twenty-one	forty	twenty	twenty-five	eighteen	five
128-25	forty	twenty-six	forty-six	twenty-five	thirty-two	twenty-two	seven
128-30	forty-five	thirty-one	fifty-two	thirty	thirty-five	twenty-five	seven
128-35	fifty	thirty-six	fifty-six	thirty-five	thirty-seven	twenty-seven	seven
128-40	fifty-eight	forty-one	sixty-four	forty	forty	twenty-nine	eight
128-45	sixty-three	forty-six	seventy-two	forty-five	forty	twenty-nine	eight
128-50	seventy	fifty-one	seventy-six	fifty	forty-five	thirty-four	eight point five
128-55	seventy-five	fifty-six	eighty-two	fifty-five	forty-five	thirty-four	eight point five
128-60	eighty	sixty-one	eighty-six	sixty	forty-nine	thirty-eight	nine
128-65	eighty-five	sixty-six	ninety-two	sixty-five	fifty-one	forty	nine
128-70	ninety-two	seventy-one	one hundred	seventy	fifty-one	forty	nine
128-75	ninety-seven	seventy-six	one hundred and five	seventy-five	fifty-one	forty	nine
128-80	one hundred and five	eighty-one	one hundred and twelve	eighty	fifty-two	forty	ten