Buna cord

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Buna Cord and O-Rings….Demystified

Lyn Tremblay's Assortment of Pendants made using the 8mm Buna Cord
Posted on February 16, 2017 at 9:13 pm byWendy Orlowski / Front Page, News and Information / 0

Have you ever wondered about Buna Cord and those little rubber type rings that can be used to enhance the look of Buna cord?
Well, wonder no more.
We have put together a little video that explains (hopefully) everything you have ever wanted to know but were afraid to ask.
You can find the video here.
You can find more of  Lyn’s work here and Maureen’s here.

Lyn Tremblay used 8mm Buna cord for her Textured Disc Pendant

Lyn Tremblay used 8mm Buna cord for her Textured Disc Pendant

Lyn Tremblay used 8mm Buna cord for her Textured Disc Pendant

Lyn Tremblay used 8mm Buna cord for her Textured Disc Pendant

Maureen Tees Created End Caps for the 12.7mm Buna Cord with an Extruder and Polymer Clay

Maureen Tees Created End Caps for the 12.7mm Buna Cord with an Extruder and Polymer Clay

Tags: buna cord, disc pendant, end caps, extruder, industrial look, jewelry, necklaces, o-rings, pendant, polymer clay

Sours: https://shadesofclay.com/buna-cord-o-rings-demystified/

Standard and Metric Buna Cord Stock

Application and Temperatures Range 

Buna (or Nitrile) material is great for all but the most extreme applications. It works from -40-degrees F to 250-degrees F, and has good wear resistance. It works with oils

Not Recommended for

Does not work with brake fluid, ketones, and some hydraulic fluids. It is not resistant to weathering, sunlight, and ozone unless a special compound is used.

Available Sizes

Cord stock is O-Ring material, ready to be cut to create custom size O-Rings. There is a large selection of cross-sections available and can be cut to any length you need. If this is a static application, this is a great solution. If the O-Ring will be moving, spliced and vulcanized O-Rings are much sturdier.

Standard, or Imperial, sizes come in fractions of an inch. Metric sizes come in millimeters. Cord Stock is sold by the foot.

SKUCross SectionMaterial 
.040-BUNA.040Buna-70Quote
.040-BUNA.040Buna-70Quote
.0625-BUNA.0625-1/16-1.6MMBuna-70Quote
.070-Buna.070-1/16Buna-70Quote
.0937-BUNA.0937-3/32-2.4MMBuna-70Quote
.103-BUNA.103-3/32Buna-70Quote
.125-BUNA.125-1/8Buna-70Quote
.134-BUNA-SQ.134Buna-70Quote
.139-BUNA.139-1/8-3.5MMBuna-70Quote
.139-BUNA-SQ.139Buna-70Quote
.1875-BUNA.1875-3/16Buna-70Quote
.210-BUNA.210-3/16Buna-70Quote
.250-BUNA.250-1/4Buna-70Quote
.275-BUNA.275-1/4-7MMBuna-70Quote
.3125-BUNA.3125-5/16-8MMBuna-70Quote
.375-BUNA.3753/8-9.5MMBuna-70Quote
.500-BUNA.500-1/2Buna-70Quote
.5625-BUNA.5625-9/16Buna-70Quote
.625-BUNA.625-5/8Buna-70Quote
.6875-BUNA.6875-11/16Buna-70Quote
.750-BUNA.750-3/4Buna-70Quote
1.125-BUNA1.125-1 1/8Buna-70Quote
1.6MM-BUNA1.6MMBuna-70Quote
10MM-BUNA10MMBuna-70Quote
11MM-BUNA11MMBuna-70Quote
13MM-BUNA13MMBuna-70Quote
15MM-BUNA15MMBuna-70Quote
1MM-BUNA1MMBuna-70Quote
2.5MM-BUNA2.5MMBuna-70Quote
2MM-BUNA2MMBuna-70Quote
3.5MM-BUNA3.5MMBuna-70Quote
3MM-BUNA3MMBuna-70Quote
4.5MM-BUNA4.5MMBuna-70Quote
4MM-BUNA4MMBuna-70Quote
5.5MM-BUNA5.5MMBuna-70Quote
5MM-BUNA5MMBuna-70Quote
6.5MM-BUNA6.5MMBuna-70Quote
6MM-BUNA6MMBuna-70Quote
8.4MM-BUNA8.4MMBuna-70Quote
8MM-BUNA8MMBuna-70Quote
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Sours: https://www.rocketseals.com/
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Supplies:
  • Premo Clay
  • Buna Cord
  • Knitting Needle or Bamboo Skewer
  • Wire
  • Flat Nosed Pliers
  • Super Glue Gel
Step 1
Step 1: Roll two balls of clay, making one of them slightly larger. Take the larger of the two balls, and roll with your finger on your work surface to get a "pill" shaped bead.

Step 2
Step 2: Make a hole in your round bead by using the end of your buna cord. Press the buna into the bead about half way (twisting the buna as you push it in will help!). Do not go all the way through the bead. Gently remove the buna from the bead.

Step 3
Step 3: Use a knitting needle or bamboo skewer to make a hole all the way through your "pill" shaped bead. You want the hole in this bead to be about 1 1/2 times the diameter of the buna you are using. Remove the needle from the bead. Bake both beads at this time, and then cool them.

Step 4
Step 4: Put some Super Glue Gel inside the hole you made in your round bead. Insert your buna cord into the hole. Don't move the buna for a few minutes to give the glue a chance to get a good bond going!

Step 5

Step 5: Take a piece of wire, and bend it in half. Put the other end of your buna in the wire, where the bend is.

Step 6

Step 6: Take the "pill" shaped bead and thread it onto the wire.

Step 7
Step 7: Grasp the ends of the wire with your pliers, and start pulling it through the bead. This will pull the buna through the bead, and it should be a nice snug fit. This might take a little elbow grease! Continue to pull the wire through until you get a loop of buna coming out the end. Pull it through until you have a loop of buna big enough to fit over your round bead. You can trim the cut end of the buna if there is any left showing outside the bead.

Step 8
Step 8: And that's it folks! As you can see in the picture, you now have a "bead and loop closure", and a wonderful utility that will work on all your buna cord jewelry.!

Sours: https://www.polymerclaycentral.com/cyclopedia/bunacord.html
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