Sealing materials series
File no. SERIES-02 · 4 registered models
Roller-pressing / beater-add · Asbestos-free
Mineral fibres for sealing materials
For industrial sealing materials such as asbestos-free eco-friendly gaskets and paper-based sheets made by roller-pressing or beater-add processes. After surface treatment the fibres disperse compatibly and bond strongly with rubber, improving the tensile strength and high-temperature stability of the sheet.
Registered models
BE series · sealing models overview
BE-SG21Mainstay for roller-pressing: L/D ≥150, shot (>125μm) ≤1%, green/yellow.Roller-pressing · Melting point >1000℃
BE-SGL25Roller-pressing: L/D ≥50, shot <1%, green/yellow.Roller-pressing · Shot <1%
BE-C08White fibre for beater-add: melting point above 1600℃, L/D ≥100, shot ≤1%.Beater-add · Melting point >1600℃
BE-C06Beater-add: green/grey, L/D ≥80, shot ≤1%.Beater-add · Shot ≤1%
Parameter overview (typical ranges)
| Model | Colour | Melting point | L/D ratio | Shot (>125μm) | Hardness | Density | Process |
|---|---|---|---|---|---|---|---|
| BE-SG21 | Green/yellow | >1000℃ | ≥150 | ≤1% | 6 | 2.82 | Roller-pressing |
| BE-SGL25 | Green/yellow | >1000℃ | ≥50 | <1% | 6 | 2.82 | Roller-pressing |
| BE-C08 | White | >1600℃ | ≥100 | ≤1% | 6 | 2.1 | Beater-add |
| BE-C06 | Green/grey | >1000℃ | ≥80 | ≤1% | 6 | 2.82 | Beater-add |
Parameters are typical model ranges (source: public information on the company website). The company brochure also lists models such as BE-SG18 and BE-C17 (roller-pressing / beater-add); batch availability is subject to commercial confirmation.
Supplementary brochure models (BE-SG18 / BE-C17)
| Model | Colour | Melting point | L/D ratio | Shot (>125μm) | Density (g/cm³) | Process |
|---|---|---|---|---|---|---|
| BE-SG18 | Green/yellow | >1000℃ | ≥100 | <2% | 2.82 | Roller-pressing |
| BE-C17 | Green/yellow | >1000℃ | ≥100 | <2% | 2.82 | Beater-add (paper-based sheets) |
Source: public parameters in the Boer Fibre company brochure (magazine-style booklet).
Applications & evidence
- Applications: asbestos-free eco-friendly sealing gaskets (roller-pressing), gaskets / paper-based sheets (beater-add), and other industrial sealing materials.
- Properties: hydrophilic dispersion and strong latex adhesion, improving the wet strength, drainage, heat resistance and dimensional stability of the sheet.
- Asbestos-free: SGS report CANEC25025290506 (all 6 asbestos types not detected); RoHS / SVHC passed.
FAQ
10 things you may want to know about selecting sealing fibres
Q1What role do mineral fibres play in sealing materials?
Mineral fibres act as the skeletal reinforcement in asbestos-free sealing gaskets: they improve the tensile strength, high-temperature stability and dimensional stability of the sheet. Boer BE-series sealing fibres (BE-SG21, BE-SGL25, BE-C08, BE-C06) are surface-treated for hydrophilic dispersion and strong latex adhesion, and are suitable for gaskets and paper-based sheets made by roller-pressing and beater-add processes.
Q2Which fibres are chosen for roller-pressing vs beater-add?
For the roller-pressing process, BE-SG21 (L/D ≥150, shot ≤1%) and BE-SGL25 are commonly used; for beater-add (Hatschek / wet laying), BE-C08 (white, melting point above 1600℃) and BE-C06 are commonly used. The company brochure also lists models such as BE-SG18 and BE-C17; availability is subject to commercial confirmation. Contact Boer technical support for selection and formulation tuning.
Q3What are the melting point and heat resistance of sealing fibres?
Standard models have a melting point above 1000℃, and the white fibre BE-C08 above 1600℃, suited to high-temperature sealing conditions. Specific values are subject to the batch test report.
Q4How does shot content relate to paper formation uniformity?
The beater-add process requires uniform fibre web formation and good drainage. Excessive shot (non-fibrous material) affects sheet strength and surface quality. Boer's wet process uses a water medium to eliminate the electrostatic attraction between fibre and shot, separating them by differences in gravity and resistance; models such as BE-SG21 and BE-C08 have shot ≤1% (>125 μm).
Q5How is the surface treatment and latex bonding?
After surface treatment, Boer's sealing-series fibres disperse hydrophilically and adhere strongly to latex, improving the wet strength, drainage, heat resistance and dimensional stability of the sheet.
Q6Do sealing fibres contain asbestos? What is the test basis?
Boer fibres are asbestos-free man-made mineral fibres. SGS report CANEC25025290506 (2025-10-22) shows all 6 asbestos types, including chrysotile, not detected (XRD/PLM, detection limit 0.1%).
Q7Are the products RoHS / SVHC compliant?
The products have passed RoHS 10-substance testing (report CANEC25025290502) and SVHC 250-substance testing (report CANEC25025290504), complying with applicable REACH requirements; originals can be requested for verification.
Q8Is an MSDS/SDS safety data sheet provided?
Yes. An SDS safety data sheet is provided (EECSSDS2605060802, prepared in accordance with REACH Annex II), and the batch test report is delivered with each shipment.
Q9What are the packaging and storage requirements?
Products are packed in moisture-proof laminated bags or eco-friendly paper bags, with custom packaging on request. Store in a dry, ventilated place away from moisture and caking, and keep away from open flame and strong oxidizers.
Q10How do I request a sample or selection support?
Call the national sales hotline 4006-0763-82 or email info@boerfibre.com. Boer recommends models based on your gasket process (roller-pressing / beater-add) and supports sample testing; specifications and commercial terms are subject to written confirmation.
Need selection advice or samples for sealing fibres?
Boer recommends models based on your gasket process (roller-pressing / beater-add) and supports sample testing.