Presented By:
INSTALLING
RUBBER
GASKETS
FOR
WATERTIGHT
JOINTS
SINGLE OFFSET
O-RING PROFILES
THINK SAFETY 1st
 Practice ALL safety precautions.
Follow all OSHA & Manufacturers’
safety recommendations.
Wear protective gear
Gasket Types
• O-Ring
– Circular Profile
• Single Off-Set
– Triangular Profile
Gasket Types
• Single Off-Set
• O-Ring
– Circular Profile
– Triangular Profile
Assembly method of
these 2 gaskets is
NOT the same
ONLY Assembly Difference
O-RING
Lube gasket and
lube spigot
BEFORE installing
gasket onto spigot
Lube spigot
AFTER putting
on the gasket
SINGLE
OFFSET
Step 1 – Clean & Inspect
Clean the bell
AND spigot
Remove all dirt
and debris
Step 1 – Clean & Inspect
Inspect the Bell and
Spigot
Step 1 – Clean & Inspect
Look for cracks & chips.
Step 1 – Clean & Inspect
REPORT findings to supervisor
for disposition.
Step 2 – Placing the Gasket
LIFT the precast following proper handling &
safety procedures
Lift Bar
Lift Pins
Step 2 – Placing the Gasket
LIFT the precast following proper handling
& safety procedures
Step 2 – Placing the Gasket
Place
Ridges AGAINSTSpigot
Spigot
Ridges
Step 2 – Placing the Gasket
Make sure the
gasket is fully
seated in the
shoulder or
groove of the
joint
GAP
SHOULDER
Step 2 – Placing the Gasket
Remove
Gap.
SHOULDER
Push gasket
against
shoulder
or groove
Step 2 – Placing the Gasket
It is important to equalize the gasket to
remove bunching and overstretching
Step 2 – Placing the Gasket
Insert screwdriver or other
blunt, rounded instrument
Step 2 – Placing the Gasket
Equalize gasket to remove bunching and
overstretching
Go completely
around the
structure to
insure the
gasket is
stretched evenly
around the joint.
Step 2 – Placing the Gasket
Visually recheck the gasket to make sure it
is seated snugly against the groove
Step 3 – Lubrication
Proper Lube
Use clean lube
Step 3 – Lubrication
Generously Lube the Bell
LUBE INSIDE THE
BELL
Step 3 – Lubrication
Generously Lube
For SINGLE
OFFSET, place lube
on top of gasket
AFTER ASSEMBLY
onto spigot
For O-RING, lube
spigot and lube gasket,
THEN ASSEMBLE onto
spigot.
Step 3 – Lubrication
Generously Lube the Gasket
REMEMBER!
For Single Off-Set Gaskets….
Lube goes ON
TOP of Gasket
Do NOT Place Lube
on a Bare Spigot
Step 4 – Set the Precast Section
KEEP THE STRUCTURE
LEVEL AND PLUMB
Step 4 – Set the Precast Section
KEEP THE
STRUCTURE LEVEL
AND PLUMB
Step 4 – Set the Precast
Section
COMPLETE
THE
SECTIONS
Step 5 – Visual Inspections
Walk around the structure to verify the
section is seated evenly
Step 5 – Visual Inspections
Look inside and outside structure
Make sure the
joints are
seated evenly
all around
•SAFETY 1st
•CLEAN, INSPECT JOINTS
•PLACE GASKET - EQUALIZE
•LUBRICATE
•SET PRECAST – ENSURE LEVEL
•RE-INSPECT
REMEMBER
O-RING
Lube gasket and lube
spigot BEFORE
installing gasket onto
spigot
Lube spigot
AFTER installing
gasket
SINGLE
OFFSET