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O-Ring Standards
Aerospace Recommended Practice "ARP568" defines Uniform dash numbering for O-ring. In 1971 SAE replaced this name as AS568 (Aerospace Standard). There are 2 classes of tolerances for Internal diameters. Most common c/s - 1.78, 2.62, 3.53, 5.33, 6.99 and some additional ARP 900. Each 3 digit...- Sealing guy
- Post #10
- Forum: Mechanical engineering general discussion
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Gearbox pressure buildup and breather calculations
Quite an interesting thread. Were you able to decide on oil and breather? Shaft seals I believe you may have to go for material that is compatible with oil as well as water. I would probably look for PTFE based rotary seals. Seal lip can be designed to withstand the pressure from internal...- Sealing guy
- Post #2
- Forum: Mechanical Seal engineering
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O-ring groove design
Unfortunately there are no standards for conical sealing. O-ring being round in Shape, after assembly need to have same squeeze / fill in these type of grooves too. Only concern here, as you rightly mentioned is size selection. In these cases I would prefer to go for O-ring ID size either equal...- Sealing guy
- Post #4
- Forum: Mechanical Seal engineering
