High temp silicone square tubing
High temp silicone square tubing brings two selection questions together: the required section shape and the conditions around the finished tube. Show the outside outline, internal passage and corner details on the drawing, since the word square does not define all of them. This article previously cited 390 degrees Fahrenheit; treat that as an existing article claim, not a rating for every proposed profile. A particular compound and construction need to be assessed for the actual heat exposure. Where the tube will be used in a metering pump, its section also needs to match the equipment.
The original silicone-tubing size examples list inside dimensions of 1/4 inches (6 mm) for size 1, 3/8 inches (10 mm) for size 2, 3/5 inches (19 mm) for size 5, and 1-1/2 inches (38 mm) for size 8. These pairs are reproduced as written, including the size 5 entry whose inch and millimetre figures do not agree. Resolve the dimensions against the selected drawing before ordering. For a custom square section, define the internal width and height as well as the outside dimensions, cut length and color. A bore-size label from a round-tube list is not a complete specification for that profile.
The original high temp silicone square tubing description lists 1.15 g/cm³ for its specific-gravity entry, tensile strength of 10.3 N/mm², and 600% elongation at break. Keep these as the article’s stated figures, rather than applying them to every compound or profile. A trial piece can be evaluated for the square section, corner fit and routing required by the assembly. Include that intended use when discussing a sample, along with the proposed order quantity and any color requirement. Sample eligibility and order timing should be agreed for the particular request.
Product specifications
- Product form
- Tubing with a square section
- Material
- Silicone. Specify the compound grade for the selected service.
- Dimensions to confirm
- Width, length, corner radii and orientation at the mating section; internal section, wall thickness and cut length.
- Thermal duty
- Define continuous exposure, short peaks and cycle time; establish the usable limit for the selected compound and assembly.
- Line layout
- Check bend radius, unsupported spans and clearance at both connections.
- Section definition
- Specify whether the outside, the passage or both are square. Dimension internal width and height, corner radii and wall thickness.
- Pump interface
- For the metering-pump use described, match the complete section to the equipment rather than selecting it by a round-bore size label.
- Size-data check
- The source mixes inch and metric examples, including an inconsistent size 5 pair. Resolve the ordered dimensions against a single approved drawing.
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