Watson-Marlow MR-Series - Manual (Page 32)

Revision 1.4 / August 2013 Visit our website at www.masosine.com 32
Seal Options
1. Lip Seal Assembly
This is the standard seal which is used in the
MasoSine Pump. It consists of three lip seals,
two of which are used to seal product into the
pump, and one which is used to prevent the
pump from pulling air. The two front lip seals
incorporate a stainless steel support ring
enabling the assembly to withstand pressures
from the product side up to 150 psi.
Figure 17
shows a list of parts and an accompanying
cross section drawing which makes up the lip
seal assembly
Item Description
506 Lip Seal Housing
510 Lip Seal (3)
374 PO-Insert
520 Support Ring (2)
530 Lip Seal Shaft Sleeve
Figure 17 – Lip Seal Assembly
2. O-Ring Seal Assembly
The o-ring seal assembly uses a single
elastomeric o- ring to seal the product from
escaping the pump housing. This type of seal
arrangement can be used only when product
pressures do not exceed 100 psi and the
shaft speed does not exceed 300 rpm.
Figure 18
shows a list of parts and an accompanying
cross section drawing which makes up the o-
ring seal assembly.
Item Description
620 O-Ring Seal Housing
513 Dynamic Radidal O-Ring
374 PO-Insert
532 O-Ring Seal Shaft Sleeve
Figure 18 – O-Ring Seal Assembly
374 506
620
374