21 Single Spring Seal for Water Pump

• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Single Spring Seal
• Standard: Standard
• Model NO.: Component Seal
• Balance: Unbalanced
• Model: 21 Seal
• Seal Faces: Sic/Tc/Carbon/Ce
• Rubber Materials: NBR/EPDM/Viton
• Transport Package: Carton Box
• Specification: 0.5"-4"
• Trademark: Trisun
• Origin: China
• HS Code: 8484200090
• Production Capacity: 100000pieces/Year

Product Description

21 Single Spring seal and there are series 0.5"-4".It's popular model which are widely used for many kinds of water pump.Replace John Crane Type 21 with "N" seat
Operating Limits:
Pressure:   0~1MPa
Speed:   ≤13 m/s
Temperature:   -30ºC~+200ºC
 
Rotary Ring(Carbon/Sic/TC)
Stationary Ring(Ceramic/Sic/Tc)
Secondary Seal(nbr/Epdm/VITON)
Spring & Other Parts(S.S/Sus304/Sus316)
 
Design Feature: 
a. Single spring,rubber bellows seal.
b. Besides the stationary ring of type "N" ,other stationary rings
such as John Crane types "W" , "WM" can also be provided.