Sealed [Closed] Blind Rivets

 

CLOSED End “CUP”

Also known as Sealed Blind Rivet.

Designed with a completely closed body, this rivet is ideal for applications that need to be water/pressure tight or where mandrel retention is paramount.

Used for providing a leak-proof joint.

 

 

Head Styles.

 

 

 

 

 

 

 

 

Dome Head

Dome Headed or sometimes called Round head blind rivet is the most versatile and commonly used type whose lower profile head is approx. twice the diameter of the rivet body. This provides adequate bearing surface for nearly all applications where metals are being joined.

CSK Head

Countersunk or CSK head profile provides a neat and flush finish to the joint.

This enables multiple layered assembly and also a safe surface without any projection.

 

 

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Material USAGE GUIDE.

Galvanic Corrosion • When dissimilar metals come into contact in the presence of an electrolyte, a galvanic action occurs which corrodes one metal at a faster rate and the other more slowly. This phenomenon can cause major riveted joint failures and care must be taken to avoid the occurrence. The following table is a guide.

	METAL JOINED
RIVET MATERIAL↓	Aluminium	Coated Steel	Stainless Steel	Copper	Brass
Aluminium	YES	CARE	NO	NO	NO
Coated Steel	NO	YES	NO	NO	NO
Stainless Steel	CARE	CARE	YES	YES	YES
Copper	NO	NO	YES	YES	YES
Monel	NO	NO	YES	YES	YES
YES	Compatible
NO	Incompatible – Avoid contact with each other
CARE	Use with care. Painting metals will help

Hence,

1) Select materials that are as close together as possible in the Galvanic
Series Chart
2) Provide a barrier between the two metals, such as paint, non-metallic
washer or gaskets
3) Design the fastener as the cathode so the cathodic area is small as
compared to the anodic area
4) Use a metallic finish on the fastener that is close on the chart to the
mating material