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TA Bauerle and Bruhnke7 found that aeration reduces the effect of oil additives on fluoroelastomer properties. Some of their data is reproduced in Fig. 14.4,5 showing the effect of aeration of an SF-grade 5W30 oil on the retention of elongation of a VDF/HFP copolymer (FKM-E430), a VDF/HFP/TFE terpolymer (FKM-B600), and a VDF/PMVE/TFE fluoroelastomer (FKM-GFLT). The HFP-containing polymers show much better retention of properties with aeration.
As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
Pressure
Oil Seals which are also known as rotary shaft seals are used to prevent lubricants from leaking and escaping. They protect key components of the machinery from being damaged from various fluids, dirt and dust from getting inside the machines. Oil Seals are a vital component in preventing harmful interactions between moving and static parts. Without using them you could cause expensive damage and halt whole operations. Using our 6 Guidelines for oil seals will help your buying decision. You can read about the different Oil Seals we stock here.
Contact
Rotary Wheel Of Auto Parts

How to Choose the Right Oil Seal