Wave Spring Vulcan 1677 Mechanical Seals For Water Pumps Wave Spring Vulcan 1677 mechanical Seals For Water Pumps Suggested operating limits Temperature : -30 ~ 210℃ Speed : ≤ 18m/s Pressure ≤ 1.2 Mpa Combined material Rotary face : Carbon / Sic / TC Stat Ring : Carbon / Sic / TC Seat Type :Standard Vulcan type