Product Description

Part number 77611 is a Lycoming exhaust flange gasket used to seal exhaust flange joints on Lycoming engines and help maintain gas-tight connections in the exhaust system.

0 1. Overview

This exhaust component is furnished as a factory-new Lycoming OEM part in the Blo-Proof exhaust gasket family. The gasket belongs to a group manufactured in a one-piece 7/64 inch thick steel construction with a split metal inner ring that provides a tight seal. Within this family, the 77611 version is identified with a 1.75 inch designation. The gasket uses a spiral wound configuration known as a no-blow style for exhaust service. Application information identifies usage on Lycoming O-320 engines except H series. The gasket is offered as an individual part without mounting hardware. It is supplied under Lycoming 77611 and is associated with alternate replacement part numbers RA77611 and SL77611, with cross references noting LW-19296 and 65321 as replaced numbers and identifying it as the spiral wound version of 75118. Listed characteristics include a weight of 0.052 lb and dimensions of about 3.25 by 2.25 by 0.125 inches.

0 2. Key Features

  • Factory-new Lycoming OEM exhaust flange gasket
  • Part of a Blo-Proof exhaust gasket family
  • One-piece steel construction in 7/64 inch thickness for the family
  • Split metal inner ring design within the family for a tight exhaust seal
  • Spiral wound no-blow style for exhaust flange joints
  • Identified with a 1.75 inch designation within the Blo-Proof series
  • Used on Lycoming O-320 engines except H series
  • Supplied as the gasket only without mounting hardware
  • Associated alternate part numbers RA77611 and SL77611
  • Cross-referenced to former Lycoming part numbers LW-19296 and 65321 and spiral wound relative to 75118
  • Listed part weight of approximately 0.052 lb
  • Listed dimensions of approximately 3.25 in x 2.25 in x 0.125 in
0 3. Specifications

Part number: 77611
Component type: Exhaust flange gasket for Lycoming engines
Gasket family construction: One-piece 7/64 in thick steel with split metal inner ring (family specification)
Style: Spiral wound no-blow type within the exhaust gasket family
Nominal size designation in family: 1.75 in
Engine application reference: Lycoming O-320 except H series
Superseded or related Lycoming numbers: LW-19296, 65321, 75118 (spiral wound version of 75118)
Alternate replacement part numbers: RA77611, SL77611
Listed weight: 0.052 lb
Listed dimensions: 3.25 in x 2.25 in x 0.125 in
Packaging: Supplied as a single exhaust flange gasket without mounting hardware

FAQs

01. What is the primary application of the 77611 exhaust flange gasket?

The 77611 exhaust flange gasket is used to seal exhaust flange joints on Lycoming engines, including Lycoming O-320 engines except H series.

02. Does the 77611 exhaust flange gasket include mounting hardware?

The 77611 exhaust flange gasket is supplied as the gasket only and does not include mounting hardware.

03. What style of construction is associated with the 77611 exhaust gasket?

The 77611 exhaust gasket is part of a Blo-Proof gasket family that uses a one-piece 7/64 inch thick steel construction with a split metal inner ring and is identified as a spiral wound no-blow style within this family.

04. Which part numbers are listed as alternates or replacements for 77611?

Alternates or related replacement part numbers for 77611 include RA77611, SL77611, LW-19296, 65321, and 75118 identified as the non-spiral version.

05. What are the listed dimensions and weight for the 77611 exhaust flange gasket?

The 77611 exhaust flange gasket has listed dimensions of approximately 3.25 inches by 2.25 inches by 0.125 inch and a listed weight of about 0.052 lb.

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