Discussion Overview
The discussion revolves around finding a suitable sealing solution for a 1/8" diameter steel rod that needs to slide slowly past a wiper while maintaining cold oil at around 0 degrees Celsius on one side and standard pressure air on the other side. The focus is on identifying appropriate gasket materials or seals that can handle several hundred psi of pressure.
Discussion Character
- Technical explanation
- Debate/contested
- Exploratory
Main Points Raised
- One participant seeks a reliable rod wiper or gasket material for a specific application involving a steel rod and pressurized fluids.
- Another participant clarifies that rod wipers are not designed for sealing and suggests alternatives such as O-rings, urethane cups, and Teflon U-cups.
- A participant questions the suitability of O-rings for use under 1,000 psi pressure.
- Discussion includes considerations about O-ring performance based on material properties, hardness, and extrusion gaps at high pressures.
- A reference to the Parker O-ring Handbook is provided for further information on O-ring specifications and performance.
Areas of Agreement / Disagreement
Participants generally agree that rod wipers are not appropriate for sealing purposes and that O-rings or similar seals are more suitable. However, there is uncertainty regarding the pressure limits of O-rings and the specific material choices that would be optimal for the application.
Contextual Notes
The discussion does not resolve the specific pressure limits for O-rings in this context, nor does it clarify the best material choice for the sealing application. There are also assumptions about the pressure conditions and the compatibility of materials that remain unaddressed.