October 08, 2024
Torque vs. Load Study for Flared Tube Fittings
Tools and Design Standards
Weight Study Chart
Wyle Laboratories Test Report
Recommended Assembly Instructions
VOI-SHAN – SCOTT CONNECTOR SYSTEM Customer Drawings
Conical Seal into the Boss Design
VOI-SHAN reports on SCOTT CONNECTOR SYSTEM
Development of Flared Fittings for Helium Lines
SECO SEALS Historical Engineering Documents
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SECO7 Parts Matrix

Following is the cross reference of sizes to SECO7 37-degree conical seals.

Nominal TUBE ODSECO7A/ATSECO7C/CTSECO7N/NS/NTSECO7S/SS/ST
1/8″SECO7A02SECO7C02SECO7N02SECO7S02
3/16″SECO7A03SECO7C03SECO7N03SECO7S03
1/4″SECO7A04SECO7C04SECO7N04SECO7S04
5/16″SECO7A05SECO7C05SECO7N05SECO7S05
3/8″SECO7A06SECO7C06SECO7N06SECO7S06
7/16″SECO7A07SECO7C07SECO7N07SECO7S07
1/2″SECO7A08SECO7C08SECO7N08SECO7S08
9/16″SECO7A09SECO7C09SECO7N09SECO7S09
5/8″SECO7A10SECO7C10SECO7N10SECO7S10
3/4″SECO7A12SECO7C12SECO7N12SECO7S12
7/8″SECO7A14SECO7C14SECO7N14SECO7S14
1″SECO7A16SECO7C16SECO7N16SECO7S16
1-1/8″SECO7A18SECO7C18SECO7N18SECO7S18
1-1/4″SECO7A20SECO7C20SECO7N20SECO7S20
1-3/8″SECO7A22SECO7C22SECO7N22SECO7S22
1-1/2″SECO7A24SECO7C24SECO7N24SECO7S24
1-3/4″SECO7A28SECO7C28SECO7N28SECO7S28
2″SECO7A32SECO7C32SECO7N36SECO7S36
2-1/2″SECO7A40SECO7C40SECO7N40SECO7S40
2-3/4″SECO7A44SECO7C44SECO7N44SECO7S44
3″SECO7A48SECO7C48SECO7N48SECO7S48
SECO7 Sizing Table for Aluminum, Copper, Nickel, and Stainless-Steel Gaskets. Optional “Silver” or “Tin” Plating – See Table Notes for Availability.

Table Notes:

Available Materials:

  • SECO7A = Aluminum
  • SECO7AT = Aluminum with Tin Plating
  • SECO7C = Copper
  • SECO7CT = Copper with Tin Plating
  • SECO7N = Nickel
  • SECO7NS = Nickel with Silver Plating
  • SECO7NT = Nickel with Tin Plating
  • SECO7S = Stainless Steel
  • SECO7SS = Stainless Steel with Silver Plating
  • SECO7ST = Stainless Steel with Tin Plating