Get a Fast Quote in 24 Hours
Match chemical resistance, wear, load, friction and static-control requirements across pumps, valves and chemical process equipment.
Technical review by an experienced engineer · Drawings treated confidentially · No obligationSelecting the right polymer component starts with the application. Review every relevant operating condition, then confirm the final grade against the complete duty cycle.
Send the media, temperature, pressure and movement conditions for an engineer-led material review.
Crossflon® polymer blends can be formed and then precision-machined into parts for chemical process equipment OEMs. These examples focus on equipment parts, not braided products or linear bearing systems.
Flexible formed components for movement compensation, media isolation and protection of critical interfaces.
View PTFE bellows
Engineered sealing profiles for media retention in rotational dynamic sealing applications.
View lip sealsSimple, versatile sealing forms machined or supplied in high-performance Crossflon® grades.
Explore Crossflon®
Formed diaphragms engineered for controlled flexing, chemical compatibility and reliable pressure regulation.
View diaphragms
Cup-seal geometries for fluid containment with enhanced pressure-activated sealing performance.
View cup seals
Bespoke polymer parts manufactured to drawing, including bushes, spacers, washers, sleeves, discs, rings and complex shapes.
View machined componentsAsk Beldam Crossley to review the geometry, duty conditions and material options before quotation.
| Property | Units | Test method | Unfilled PTFE | 403 | 512 | 605 | 705 | 905 | 1403 | 1801 | LR (D5) | J | FG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| General composition | - | - | PTFE | PTFE graphite | PTFE bronze | PTFE glass | PTFE carbon/graphite | Proprietary grade | Proprietary grade | Proprietary grade | Proprietary grade | Proprietary grade | Proprietary grade |
| Operating temperature | °C | - | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 | -250 to +260 |
| Specific gravity | g/cm³ | ASTM D1457 | 2.19 | 2.15 | 3.86 | 2.25 | 2.08 | 2.32 | 2.06 | 2.12 | 2.27 | 1.81 | 2.25 |
| Hardness | Shore D | ASTM D2240 | 58 | 62 | 70 | 65 | 60 | 62 | 62 | 56 | 62 | 60 | 60 |
| Tensile strength | MPa | ASTM D1457 | 25-30 | 14-18 | 16-20 | 18-22 | 18-22 | 16-22 | 20-26 | 25-30 | 16-20 | 16-22 | 24-30 |
| Short-term limiting PV @ 0.05 m/s | MPa m/s | BCL method | 0.065 | 0.42 | 0.78 | 0.45 | 0.70 | 0.78 | 0.90 | 0.10 | 0.70 | 0.26 | 0.35 |
| Maximum pressure (P) | MPa | BCL method | 6.9 | 14 | 14 | 14 | 14 | 14 | 20 | 7 | 14 | 5.2 | 6.9 |
| Maximum velocity (V) | m/s | BCL method | 1.3 | 5 | 2 | 2 | 5 | 5 | 5 | 2 | 2 | 2 | 2 |
| Coefficient of friction - dry static @ 0.2 MPa | - | - | 0.04 | 0.09 | 0.11 | 0.10 | 0.10 | 0.08 | 0.09 | 0.07 | 0.13 | 0.12 | 0.10 |
| Coefficient of friction - dynamic @ 0.2 MPa, 5 m/s | - | - | 0.07 | 0.11 | 0.13 | 0.12 | 0.12 | 0.11 | 0.11 | 0.08 | 0.15 | 0.13 | 0.10 |
| Wear (K) factor vs 1040 steel, 12-16 RMS | mm³/Nm × 10⁻⁹ | BCL method | 6.6 | 0.9 | 4.2 | 2.3 | 1.0 | 0.3 | 0.21 | 3.2 | 2.2 | 1.5 | 0.81 |
General range only. Guide values are retained from the existing page. Final material selection must be confirmed against full operating conditions.
Discuss chemical compatibility, PV limits, wear, load and mating surfaces with the technical team.
Include the drawing, quantity, tolerances, certification requirements and required delivery date for a faster quotation.
Crossflon® 1000 is the starting point where optimum chemical resistance, purity and low friction are required. Crossflon® 1601 can suit general chemical service and low molecular weight media. Always confirm concentration, temperature and the complete duty cycle.
Crossflon® 1403 is ceramic-reinforced for wear, creep, deformation and extrusion resistance in higher-load and dynamic duties. Crossflon® 605 can also be relevant where rigidity and reduced cold flow are priorities.
Yes. Custom machined parts include bushes, spacers, washers, sleeves, discs, rings and complex geometries, subject to drawing and application review.
Provide the media, concentration, temperature, pressure, load, movement, speed, mating surface, safety requirements and service-life target, together with a drawing or failed component where possible.
Send your drawing, failed component or operating conditions to the Beldam Crossley team for a practical solution.
Drawings treated confidentially · No obligation · UK engineering support