​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​This seal is ideal for corrosive and other general services. The Chesterton 440 is a low-cost replacement for seals made from exotic or expensive materials.
No metal parts touch sealed fluid
Prevents damage to glass-lined shafts
Hydraulically balanced
No sleeve or stepped sleeve needed