Isotek logo New Logo June 2018Lamons provides the full array of Isolation gaskets including: 1/8” retainers with pressure energized seals (IsoGuard), steel core with spring energized seals (Defender) and API 6FB firesafe isolation (Defender-FS). Lamons IsoTek product line can offer isolation solutions for ANSI class 150 -2500, API 2K-10K, AWWA, and NSF-61 potable water.


Flange Isolation KitsLamons ISOTEK™ Flange Isolation Kits

Products are manufactured in the U.S.A to ISO 9001:2015 standards. Spira Power stocks for immediate delivery for standard isolation applications. Engineered and sales support is offered for project driven jobs and inquires. For more information on the product offering, review the information provided and request a Lamons ISOTEK manual.


isoguardISOGUARD™ Sealing/Isolation Gaskets

The ISOGUARD™ sealing/isolating gasket system is designed for general applications where electrical flange isolation and corrosion control are required on pipes containing water/wastewater, gas, natural gas, oil and other hydrocarbon based medias up to 302ºF (150ºC). Available for flat face, raised face and ring type joint flanges from 1/2” to 120” (and corresponding API and DN diameters), ANSI 150-1500#, API 2-5K and PN 20-250, the ISOGUARD gasket is an engineered value-added solution for trouble free operation. The ISOGUARD sealing/isolating gasket system consists of a retainer with an incline-plane seal groove geometry designed to optimize each seal’s elastic memory, in conjunction with a proven rectangular sealing element (“Quad” ring). This design guarantees low bolt load requirements and high sealing reliability. ISOGUARD™ systems are available with a variety of retainers and seal elements.


defender gasketsDEFENDER™ Sealing/Isolation Gaskets

The DEFENDER™ sealing/isolating gasket system is designed for critical/extreme applications. Manufactured with a 316 stainless steel core retainer and laminated on both sides with high strength laminates, the DEFENDER gasket is resistant to deforming under load and is used when electrical isolation and corrosion control are required on pipes containing gas, natural gas, oil and other hydrocarbon-based medias up to 392ºF (200ºC). Available for flat face, raised face and ring type joint flanges from 1/2” to 48” (including corresponding API and DN diameters), ANSI 150-2500#, API 2-15K and PN20-PN420, the DEFENDER gasket is an engineered solution for trouble-free operation that eliminates costly leaks and provides a solution for fugitive emissions. Manufactured with an innovative industry first Press-n-Lock™ “Glue-Less Seal & Groove Technology” that combines a press in, pressure activated and spring energized seal with a unique groove that retains the seal element without the use of glue on key contact surfaces! The Press-n-Lock™ feature provides a higher confidence in sealing.


defender fs gasketsDEFENDER FS™ Sealing/Isolation Gaskets (Fire Safe)

The DEFENDER FS™ sealing/isolating gasket is designed to withstand the rigorous API standard 6FB (Third Edition) test and therefore provides a solution for those who want to electrically isolate their flange while also requiring protection against the introduction of fire in and around the flange. The objective of the test is to monitor the total leakage for the duration of the burn/cool-down cycle and during re-pressurization. Leakage was determined by the total water level drop through a visual sight gauge during the burn/cool-down cycles, by manually catching the water in a calibrated container during re-pressurization. The results concluded that the Defender FS Gasket was able to maintain its fire safe characteristics throughout the entirety of the test. During the 30 minute burn and 30 minute cool down period, the measured leakage was 0 ml/min versus the allowable rate of 22.765 ml/min. The leakage rate during the re-pressurization cycle was 5 ml/min versus the allowable rate of 22.765 ml/min. Based on years of technological experience, the DEFENDER FS sealing/isolating gasket not only meets but exceeds the pressure-containing capabilities in standard 6FB (Third Edition) as outlined by API.


sleeve and washerSleeve and Washer Sets

Lamons sleeve and washers sets, when combined with our sealing/isolation gaskets, complete a Flange Isolation Kit. For a successful flange isolation kit, it’s critical to use the appropriate material for your application. Compressive strength, flexural strength, and cut through resistance are key material physical properties that should not be over looked.

Sleeve Material Offered: G10, Nomex, Mylar
Washer Material Offered: G10, G11, Phenolic, G3, Steel ZP, Steel HC, Mica

Single Washer Set (per bolt/stud)

  • (1) ea. 1/8” {0.125”} (3.18mm) thick Steel ZP Washers
  • (1) ea. 1/8” {0.125”} (3.18mm) thick Isolating Washer
  • (1) ea. Isolating Sleeve

Double Washer Set (per bolt/stud)

  • (2) ea. 1/8” {0.125”} (3.18mm) thick Steel ZP Washers
  • (2) ea. 1/8” {0.125”} (3.18mm) thick Isolating Washers
  • (1) ea. Isolating Sleeve