Spacers, Bellows, Strainers & Accessories
Spacers, Bellows, Strainers & Accessories
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Full technical data and dimensions
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PTFE Solid & Tapered Spacer
Solid PTFE spacer, NB 1/2" to 16", 3–300 mm
Spacer machined from solid PTFE rather than lined onto steel — NB 1/2" to 16", from 3 mm to 300 mm long, in solid or tapered form.
| Product type | Solid or tapered PTFE spacer |
|---|---|
| Body / steel grade | None — solid PTFE construction |
| Lining material | Solid PTFE |
| Liner standard | ASTM D 1457 |
| Lining options | Virgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116 |
| Flange standard | ASME/ANSI B16.5 |
| Flange class | Class 150 standard; Class 300 on request |
| Size range | NB 1/2" to NB 16" |
Product overview
What it does, and where it fits.
Where a lined steel spacer is unnecessary or too thick, a solid PTFE spacer does the same job in pure fluoropolymer. Being machined from solid stock it can be made very thin — down to 3 mm — which a lined steel item cannot, and it is inert on every surface.
The tapered form is used to compensate for flange misalignment, taking up a small angular error that would otherwise be transferred into the pipework as a bending load. Lengths run from 3 mm to 300 mm across the whole NB 1/2" to 16" range.
Features
Built into every unit.
- Machined from solid PTFE to ASTM D 1457 — no steel body
- From 3 mm to 300 mm long across NB 1/2" to 16"
- Tapered form available to take up flange misalignment
- Inert on every surface, inside and out
Benefits
Why it earns its place in the line.
- Can be made far thinner than a lined steel spacer
- Tapered form absorbs angular flange misalignment
- Outstanding corrosion resistance to aggressive organic and inorganic chemicals across a wide temperature range
- Non-stick, non-wetting bore — low surface energy keeps product moving and simplifies cleaning
- Chemically inert and pure; no additives, plasticisers, stabilisers or lubricants to contaminate the process fluid
- The lowest coefficient of friction of any solid, reducing pressure drop and deposit build-up
Applications & industries
Where it is specified.
Typical applications
- Very thin make-up between lined flanges
- Correcting angular flange misalignment with the tapered form
- Isolating dissimilar metals at a flange joint
- Shimming equipment nozzles to line level
Industries served
- Chemical processing
- Pharmaceutical
- Petrochemical
- Oil & gas
- Power generation
- Pulp & paper
- Mining & metallurgy
- Agrochemicals & dyes
Technical data
Specification for PTFE Solid & Tapered Spacer.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | Solid or tapered PTFE spacer |
|---|---|
| Body / steel grade | None — solid PTFE construction |
| Lining material | Solid PTFE |
| Liner standard | ASTM D 1457 |
| Lining options | Virgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116 |
| Flange standard | ASME/ANSI B16.5 |
| Flange class | Class 150 standard; Class 300 on request |
| Size range | NB 1/2" to NB 16" |
| Temperature range | Continuous service to 260 °C (PTFE melting point 327 °C, PFA 306 °C, FEP 260 °C) |
| Pressure rating | ASME/ANSI B16.5 Class 150 flanges as standard; Class 300 available on request |
| Manufacturing standard | ASTM F 1545 |
| Spark testing | Every lined component spark tested at 5000 × E volts (E = liner thickness in mm), to a maximum of 15 000 V |
| Hydro testing | Hydrostatic or pneumatic test according to the lining technique; hydrostatic test on components with vent holes |
| Inspection | Dimensional and visual examination of liner and steel parts — weld aspect, overall dimensions, collar size, liner thickness, surface flaws and paint thickness |
| Certification | EN 10204 3.1 mill certificates and FDA certification for the fluoropolymer available on request |
| Face to face | 3 mm to 300 mm |
| Size | Length min | Length max (±2) | PTFE | PFA | FEP |
|---|---|---|---|---|---|
| 0.5" | 3 | 300 | ✓ | — | — |
| 0.75" | 3 | 300 | ✓ | — | — |
| 1" | 3 | 300 | ✓ | — | — |
| 1.5" | 3 | 300 | ✓ | — | — |
| 2" | 3 | 300 | ✓ | — | — |
| 2.5" | 3 | 300 | ✓ | — | — |
| 3" | 3 | 300 | ✓ | — | — |
| 4" | 3 | 300 | ✓ | — | — |
| 6" | 3 | 300 | ✓ | — | — |
| 8" | 3 | 300 | ✓ | — | — |
| 10" | 3 | 300 | ✓ | — | — |
| 12" | 3 | 300 | ✓ | — | — |
| 14" | 3 | 300 | ✓ | — | — |
| 16" | 3 | 300 | ✓ | — | — |
All dimensions in mm. Solid PTFE only — the catalogue marks PFA and FEP as not applicable for this item.
Available on request
- Higher diameters on request
FAQ
Questions we are asked about this item.
Taking up angular misalignment between two flanges. Without it the bolts pull the joint square and put a permanent bending load into the pipework and the liner.
Solid PTFE goes thinner (from 3 mm) and is inert on all faces. A lined steel spacer is stiffer and carries bolt load better in the larger bores and thicker sections.
Related products
Commonly specified alongside PTFE Solid & Tapered Spacer.
Spacers, Bellows, Strainers & Accessories
Lined Pipes & Spools
Lined Pipes & Spools
Enquiry
Tell us your line size — we'll confirm the spec.
Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.
Not sure which spec fits your process?
Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.
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