Fluid path - gaskets

Envelope gaskets

Overview

Envelope gaskets

Envelope gaskets are made from PTFE and are built around the choice of an EPDM or FKM rubber core, improving the gaskets sealing characteristics. They are designed to achieve a smooth bore, contamination free fluid path under clamping compression.

These sanitary gaskets can be exposed to temperature extremes from -350 °F to 450 °F and come in a range of sizes from ½ inch to 6 inches.

Features and benefits

  • Designed in accordance with ASME-BPE standards
  • USP Class VI compliant and animal derived component free (ADCF)
  • Compliant with FDA regulations CFR 21 177.2603
  • Lot numbering enables product traceability
  • EPDM or FKM rubber core option available

Technical summary

Gasket typeUnflanged 
CertificationADCF, USP Class VI 
Operating temperature range-212 - 232 °C
Operating temperature range-350 - 450 °F
Shelf life5 years

Technical Summary table lists features available within the range. See ‘Technical specifications’ tab for model specific information.

Specifications

Technical specifications

Envelope gaskets
Gasket typeUnflanged 
Internal diameter9.7 - 148.3 mm
Internal diameter0.38 - 5.84 in
External diameter21.6 - 166.9 mm
External diameter0.85 - 6.57 in
Size0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6 in
Quantity25 PCS
CertificationADCF, USP Class VI 
Operating temperature range-212 - 232 °C
Operating temperature range-350 - 450 °F
Shelf life5 years

Materials of construction

MaterialEPDM, PTFE, PTFE/EPDM, PTFE/Viton, Viton®

Literature

Brochures

  1. BioPure overview (US).pdf
    PDF - 587.4kb

Datasheet

  1. Envelope gaskets datasheet.pdf
    PDF - 128.2kb

Order Information

Product codes

Part number Size inch I.D (B) inch(mm) O.D (A) inch(mm) Quantity
42MPGR(*)-050-25 1/2 0.38 (9.7) 0.85 (21.6) 25
42MPGR(*)-075-25 3/4 0.62 (15.7) 0.85 (21.6) 25
40MPGR(*)-100-25 1 0.88 (22.4) 1.98 (50.3) 25
40MPGR(*)-150-25 1 1/2 1.38 (35.1) 1.98 (50.3) 25
40MPGR(*)-200-25 2 1.88 (47.8) 2.52 (64.0) 25
40MPGR(*)-250-25 2 1/2 2.38 (60.5) 3.05 (77.5) 25
40MPGR(*)-300-25 3 2.88 (73.2) 3.58 (90.9) 25
40MPGR(*)-400-25 4 3.84 (97.5) 4.68 (118.9) 25
40MOGR(*)-600-25 6 5.84 (148.3) 6.57 (166.9) 25

*Use (V) for FKM inner core or (E) for EPDM inner core

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